Search found 134 matches
- Mon Mar 16, 2020 5:52 pm
- Forum: Phase Changes & Related Calculations
- Topic: state functions
- Replies: 13
- Views: 1318
Re: state functions
state functions are those that are not path-dependent. So the path it takes for it to get from it's intital to final state doesn't matter
- Mon Mar 16, 2020 5:51 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chem Community Posts Due Date
- Replies: 13
- Views: 1079
Re: Chem Community Posts Due Date
we have until Wednesday
- Mon Mar 16, 2020 5:49 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Activation energy
- Replies: 1
- Views: 213
Re: Activation energy
not sure if we are allowed to post answers online lol.
- Mon Mar 16, 2020 5:29 pm
- Forum: General Rate Laws
- Topic: rate laws
- Replies: 8
- Views: 647
Re: rate laws
rate is determined by the slow step
- Mon Mar 16, 2020 5:29 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: calculating standard cell potential
- Replies: 6
- Views: 521
Re: calculating standard cell potential
Find out which one is the cathode and which one is the anode. And then plug it into the equation E= Ereduction - Eoxidation
- Tue Mar 10, 2020 8:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 2 Grades
- Replies: 22
- Views: 1147
Re: Test 2 Grades
Test grades are on myucla right now
- Tue Mar 10, 2020 8:48 pm
- Forum: Student Social/Study Group
- Topic: Midterm Question 3
- Replies: 1
- Views: 284
Re: Midterm Question 3
You probably can't find exact problems that match up (otherwise there would be no point testing). Try looking at acid/base problems in like 6D
- Tue Mar 10, 2020 8:43 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: 7E.5
- Replies: 1
- Views: 157
Re: 7E.5
catalysts can be canceled out they just are necessary for the reaction to start in the first place and aren't created. Which is different than an intermediate because they are created through reactions and then canceled out.
- Tue Mar 10, 2020 8:42 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Will We
- Replies: 2
- Views: 238
Re: Will We
Yeah if gives you the other variables I assume you can just solve for Ea
- Tue Mar 10, 2020 8:40 pm
- Forum: Phase Changes & Related Calculations
- Topic: delta G0 versus delta G
- Replies: 15
- Views: 2487
Re: delta G0 versus delta G
Delta G0 is at standard conditions while delta G can be at any
- Tue Mar 10, 2020 8:38 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: Finding k1 when given two temperatues
- Replies: 6
- Views: 445
Re: Finding k1 when given two temperatues
the question will usually tell you which ones match up
- Tue Mar 10, 2020 6:21 pm
- Forum: Student Social/Study Group
- Topic: The Final
- Replies: 5
- Views: 484
Re: The Final
I think it's best to wait to see what Lavelle will say. He'll probably send an email.
- Tue Mar 10, 2020 6:17 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 2
- Replies: 5
- Views: 474
Re: Test 2
Lavelle will probably send some sort of announcement. I assume he'll put it in the front office for us to pick up like our finals for 14A?
- Tue Mar 10, 2020 6:16 pm
- Forum: Zero Order Reactions
- Topic: 0 order
- Replies: 14
- Views: 1463
- Tue Mar 10, 2020 6:16 pm
- Forum: General Rate Laws
- Topic: orders
- Replies: 6
- Views: 440
Re: orders
add up the orders of all of the substances.
- Tue Mar 10, 2020 6:14 pm
- Forum: Balancing Redox Reactions
- Topic: Half Reactions
- Replies: 15
- Views: 776
Re: Half Reactions
First balance all elements expect H and O. Balance O next using H2O and balance H with H+. Then you balance out charges by adding e-.
- Tue Mar 10, 2020 6:10 pm
- Forum: Van't Hoff Equation
- Topic: Van’t Hoff Equation
- Replies: 11
- Views: 901
Re: Van’t Hoff Equation
ln(K2/K1)= (-DeltaH/R)(1/T2 - 1/T1)
you can use it to calculate K value at a temperature given the K value at another temperature
you can use it to calculate K value at a temperature given the K value at another temperature
- Tue Mar 10, 2020 6:09 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Email Announcement
- Replies: 8
- Views: 671
Re: Email Announcement
Lavelle will probably send a email addressing it soon.
- Tue Mar 10, 2020 6:08 pm
- Forum: Student Social/Study Group
- Topic: Final
- Replies: 21
- Views: 1362
Re: Final
Lets just wait until he responds
- Sun Mar 01, 2020 4:51 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2984594
Re: Post All Chemistry Jokes Here
Did you know that you can cool yourself to -273.15˚C and still be 0k?
- Sun Mar 01, 2020 4:51 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2984594
Re: Post All Chemistry Jokes Here
What do you get when you mix sulfur, tungsten, and silver?
SWAG.
SWAG.
- Sun Mar 01, 2020 4:48 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: Flipping the sign
- Replies: 10
- Views: 580
Re: Flipping the sign
E is usually given in reduction reactions. If you have an oxidation reaction, you flip it.
- Sun Mar 01, 2020 4:41 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: salt bridge
- Replies: 11
- Views: 654
Re: salt bridge
Maintain electrical balance between the anode and cathode
- Sun Mar 01, 2020 4:41 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: how can you tell
- Replies: 11
- Views: 746
Re: how can you tell
reactions that are short are kinetically controlled while longer ones are thermo controlled
- Sat Feb 22, 2020 10:47 pm
- Forum: General Science Questions
- Topic: What are Workshops?
- Replies: 10
- Views: 833
Re: What are Workshops?
I think you just do practice problems in them
- Sat Feb 22, 2020 10:46 pm
- Forum: Balancing Redox Reactions
- Topic: Basic conditions
- Replies: 6
- Views: 385
Re: Basic conditions
its the same as acidic solution expect you balance out the H+ with OH-
- Sat Feb 22, 2020 10:45 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Hg
- Replies: 2
- Views: 190
Re: Hg
hg2 is a covalently bounded Mercury molecule while 2hg is 2 separate hg ions
- Sat Feb 22, 2020 10:45 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: 5G.15
- Replies: 3
- Views: 214
Re: 5G.15
probably a typo then if 3 people got the same answer
- Sat Feb 22, 2020 10:44 pm
- Forum: Student Social/Study Group
- Topic: Midterm 3D
- Replies: 3
- Views: 192
Re: Midterm 3D
at ph 6 there is more products than reactants so it would be more negative
- Sat Feb 22, 2020 10:38 pm
- Forum: Balancing Redox Reactions
- Topic: Calculating the reaction Gibbs free energy
- Replies: 7
- Views: 429
Re: Calculating the reaction Gibbs free energy
n is the mole of e-
- Sat Feb 22, 2020 10:37 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Curve?
- Replies: 5
- Views: 327
Re: Curve?
I think the syllabus says he doesn't curve grades but he might adjust your grade at the end.
- Sat Feb 22, 2020 10:36 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Determining if a cell reaction is spontaneuous
- Replies: 5
- Views: 397
Re: Determining if a cell reaction is spontaneuous
a reaction is spontaneous if gibbs free energy is negative
- Sat Feb 22, 2020 10:36 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Salt Bridge
- Replies: 10
- Views: 594
Re: Salt Bridge
It is used to maintain a charge balance
- Sun Feb 16, 2020 5:59 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: 3/2R & 5/2R
- Replies: 9
- Views: 666
Re: 3/2R & 5/2R
Cp is constant pressure (5/2R) Cv is constant volume (3/2R)
- Sat Feb 15, 2020 3:19 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Joules or KJ?
- Replies: 14
- Views: 2552
Re: Joules or KJ?
I don't think it matters unless the question specifically asks for a unit
- Sat Feb 15, 2020 3:19 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Gibbs free energy
- Replies: 5
- Views: 288
Re: Gibbs free energy
yes, gibbs free energy is a state function
- Sat Feb 15, 2020 3:18 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Delta U = 0
- Replies: 8
- Views: 508
Re: Delta U = 0
for an isothermal process
- Sat Feb 15, 2020 3:17 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Negative work
- Replies: 14
- Views: 889
Re: Negative work
when your system does work. so in this class, most of the time its when a gas expands.
- Sat Feb 15, 2020 3:17 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Boltzmann Equation
- Replies: 10
- Views: 561
Re: Boltzmann Equation
You use it to find residual energy. Its useful if you have the number of particles and the amount of states it can be in
- Sun Feb 09, 2020 7:27 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Cp/Cv
- Replies: 7
- Views: 359
Re: Cp/Cv
i think just assume constant pressure.
- Sun Feb 09, 2020 7:26 pm
- Forum: Phase Changes & Related Calculations
- Topic: Heating Curve Phase Changes
- Replies: 11
- Views: 578
Re: Heating Curve Phase Changes
It takes energy to change a phase from one to another. For example, if you're heating Ice into liquid water, it'll take a certain amount of energy to get it from a solid to a liquid. This is the reason why steam at 100 degrees Celsius causes harsher burns than liquid water at 100 degrees Celsius (be...
- Sun Feb 09, 2020 7:23 pm
- Forum: Administrative Questions and Class Announcements
- Topic: memorizing things?
- Replies: 13
- Views: 570
Re: memorizing things?
i think all the equations are given to us? You will have "memorize"/understand some conceptual things because not everything is calculations
- Sun Feb 09, 2020 7:21 pm
- Forum: Administrative Questions and Class Announcements
- Topic: slides
- Replies: 8
- Views: 281
Re: slides
no slides : (
- Sun Feb 09, 2020 7:21 pm
- Forum: Phase Changes & Related Calculations
- Topic: Heat & Temperature of Phase Changes
- Replies: 5
- Views: 117
Re: Heat & Temperature of Phase Changes
It takes energy to change phases. (heat of vaporization, heat of fusion)
- Sun Feb 09, 2020 7:19 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Second Law Thermodynamics
- Replies: 4
- Views: 229
Re: Second Law Thermodynamics
yeah, the second law says that entropy of the universe is increasing
- Sun Feb 02, 2020 1:43 pm
- Forum: Phase Changes & Related Calculations
- Topic: Multiple Phase Changes
- Replies: 4
- Views: 188
Re: Multiple Phase Changes
You have to account for energy it takes for changes in phases and the difference in specific heat for different phases.
- Sun Feb 02, 2020 1:38 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Constant pressure
- Replies: 19
- Views: 626
Re: Constant pressure
Constant external pressure
- Sun Feb 02, 2020 1:38 pm
- Forum: Calculating Work of Expansion
- Topic: Gas constant
- Replies: 5
- Views: 243
Re: Gas constant
There is a chart of gas constants. Match up R with the correct units.
- Sun Feb 02, 2020 1:37 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Internal energy = State function
- Replies: 4
- Views: 235
Re: Internal energy = State function
Internal energy remains constant throughout the reaction (first law of thermo) so it doesn't matter how you get from the initial to final values.
- Sun Feb 02, 2020 1:36 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Phase change
- Replies: 20
- Views: 781
Re: Phase change
Positive because you add energy
- Sun Feb 02, 2020 1:36 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Definition of First Law
- Replies: 9
- Views: 303
Re: Definition of First Law
It's conservation of energy: energy is can't be created or destroyed. So the total energy of a internal system remains constant.
- Sun Feb 02, 2020 12:54 am
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Entropy
- Replies: 4
- Views: 346
- Sun Jan 26, 2020 9:05 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Negative Square Root solving an ICE box
- Replies: 13
- Views: 485
Re: Negative Square Root solving an ICE box
Trying doing the opposite of what you did (i.e. since its -b plus or minus ... , try minus if you did plus and plus if you did minus)
- Sun Jan 26, 2020 8:45 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Pressure & temperature in chemical equilibria
- Replies: 3
- Views: 88
Re: Pressure & temperature in chemical equilibria
Pressure shifts the reaction to the side with the least moles of gas if you add gas and the opposite if you remove gas
Temperature depends on whether or not the reaction is endothermic or exothermic
Temperature depends on whether or not the reaction is endothermic or exothermic
- Sun Jan 26, 2020 5:45 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: pH
- Replies: 7
- Views: 243
Re: pH
You would probably take the 10^-pka to convert it into Ka and then make a ICE table to find the concentration of H+ ions. After that, you would take the -log of the H+ concentration.
- Sun Jan 26, 2020 5:43 pm
- Forum: Phase Changes & Related Calculations
- Topic: Steam vs Water
- Replies: 4
- Views: 178
Re: Steam vs Water
It takes energy to convert liquid into a gas. During this period of time, more energy is added to the substance (water) without changing the temperture. Thus, you can have a liquid and a gas at the same temperature but the gas would have much more energy
- Sat Jan 25, 2020 9:59 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Acid and Bases
- Replies: 4
- Views: 185
Re: Acid and Bases
Make an ICE table and solve for H+ concentration. Find the pH by taking the -log of it, and then subtract that value from 14 to find poh
- Sat Jan 25, 2020 9:56 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Burns: Steam or Water
- Replies: 4
- Views: 117
Re: Burns: Steam or Water
It takes energy for any substance to move from liquid to gas state. During this period in which bonds are being broken, energy added to the substances does not increase the temperature. Therefore, you could have steam that is 100 degrees with more energy compared to 100 degree water.
- Sat Jan 25, 2020 9:54 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Acid and Bases
- Replies: 3
- Views: 191
Re: Acid and Bases
Usually, you would look at Ka value and set up an ICE table; however, since sulfuric acid is an strong acid, the reaction goes to completion and you can just find the concentration of [H+] via stoich and then take the -log of it.
- Sat Jan 25, 2020 9:51 pm
- Forum: Phase Changes & Related Calculations
- Topic: State Function
- Replies: 7
- Views: 311
Re: State Function
the path a reaction takes does not change the enthalpy of the reaction
- Sun Jan 19, 2020 9:03 pm
- Forum: General Science Questions
- Topic: test 1
- Replies: 8
- Views: 251
Re: test 1
It's during your discussion this week
- Sun Jan 19, 2020 6:24 pm
- Forum: Phase Changes & Related Calculations
- Topic: lecture on 1/17
- Replies: 3
- Views: 254
Re: lecture on 1/17
On Friday, we didn't really learn new material. We just did application of what we learned and some problems
- Sun Jan 19, 2020 6:23 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: X was ignored
- Replies: 27
- Views: 989
Re: X was ignored
The value of x changes 0.1 so little that it's negligible
- Sun Jan 19, 2020 5:35 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: ICE tables
- Replies: 3
- Views: 181
Re: ICE tables
You usually use ICE tables to find the concentration of a reactant or product given that the reaction does not go to completion (at equilibrium there are both reactants and products still being formed).
- Sun Jan 19, 2020 5:33 pm
- Forum: Ideal Gases
- Topic: response to change in equilibria
- Replies: 6
- Views: 313
Re: response to change in equilibria
The easiest way to think about it is if you have 2 moles of gas on onside and 1 mole of gas on the other. If you increase the pressure, the reaction will favor the side with 1 mole of gas.
- Sun Jan 19, 2020 5:28 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: pH vs. pOH
- Replies: 13
- Views: 378
Re: pH vs. pOH
to calculate pOH. You find the concentration of OH- molecules and then take the -log[OH-] to find the pOH
- Sun Jan 19, 2020 5:26 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: pKa
- Replies: 13
- Views: 444
Re: pKa
Lower pKa means a stronger acid
- Sun Jan 19, 2020 5:26 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Problem 6D.15
- Replies: 1
- Views: 71
- Sun Jan 19, 2020 12:51 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Biological examples- ATP hydrolysis, osmotic pressure
- Replies: 1
- Views: 129
Re: Biological examples- ATP hydrolysis, osmotic pressure
There some stuff on page 442 of the textbook. You should just go through the chapters and find these sections
- Tue Jan 14, 2020 6:23 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 1
- Replies: 7
- Views: 200
Re: Test 1
We'll probably go over what we will have to know on the test this week.
- Tue Jan 14, 2020 6:21 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Endothermic and exothermic reactions
- Replies: 11
- Views: 1049
Re: Endothermic and exothermic reactions
Endothermic reactions favor product formation if the temperature increases and vice versa. Exothermic reactions favor reactant formation if temperture increase. The opposite is true if temperture decreases. Equations tend to resist change by doing the opposite of what is happening around them
- Tue Jan 14, 2020 6:16 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Equilibrium constants table
- Replies: 4
- Views: 160
Re: Equilibrium constants table
Temperature is how you decide between the three. There should be a colmum that shows temperature for and a given K for that
- Tue Jan 14, 2020 6:15 pm
- Forum: General Science Questions
- Topic: Test 1 [ENDORSED]
- Replies: 13
- Views: 446
Re: Test 1 [ENDORSED]
it's week 3 during your discussion i think
- Tue Jan 14, 2020 6:14 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Autoprotolysis
- Replies: 8
- Views: 191
Re: Autoprotolysis
it's proton transfer between two of the same atom. one of them acts as a bronsted acid and the other as a bronsted base.
- Sat Jan 11, 2020 2:59 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Partial Pressure
- Replies: 7
- Views: 305
Re: Partial Pressure
Yeah its only used for gases. Every gas has a partial pressure and when all the partial pressures get added together, you get the total pressure of the system.
- Wed Jan 08, 2020 10:33 pm
- Forum: Ideal Gases
- Topic: Understanding Q
- Replies: 19
- Views: 670
Re: Understanding Q
Yes, solving for Q is the same way you would solve for K
- Wed Jan 08, 2020 10:33 pm
- Forum: Ideal Gases
- Topic: PV=nRT equation manipulation
- Replies: 13
- Views: 655
Re: PV=nRT equation manipulation
You can change the equation around so that you can find the pressure of elements which helps you find the equilibrium for gases
- Wed Jan 08, 2020 10:25 pm
- Forum: Ideal Gases
- Topic: Ideal gas constant R
- Replies: 10
- Views: 1556
Re: Ideal gas constant R
It depends if the pressure given is in atm or pascals
- Wed Jan 08, 2020 10:17 pm
- Forum: Ideal Gases
- Topic: non gases
- Replies: 3
- Views: 529
Re: non gases
Yes, the ideal gas law only applies to gases
- Wed Jan 08, 2020 10:13 pm
- Forum: Ideal Gases
- Topic: Understanding Q
- Replies: 13
- Views: 472
Re: Understanding Q
Yeah you only count things that are in aqeuous states and gas states if you are calculated the equilibrium for pressure
- Sat Dec 07, 2019 11:59 pm
- Forum: Identifying Acidic & Basic Salts
- Topic: 6D11 part e
- Replies: 1
- Views: 154
6D11 part e
Decide whether an aqueous solution of each of the following salts has a pH equal to, greater than, or less than 7. Write a chemical equation to justify your answer: AlCl3 The Cl doesn't factor into pH since it came from a strong acid. So you use the Al which would be Al3+ as an ion. But the solution...
- Sat Dec 07, 2019 10:24 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: acid constants
- Replies: 1
- Views: 100
Re: acid constants
no i dont think.
- Sat Dec 07, 2019 9:20 pm
- Forum: Lewis Structures
- Topic: ClF4+ Lewis Structure
- Replies: 2
- Views: 2701
Re: ClF4+ Lewis Structure
I think F only forms only single bonds because of its electronegativity
- Sat Dec 07, 2019 9:15 pm
- Forum: Calculating the pH of Salt Solutions
- Topic: pH formula?
- Replies: 69
- Views: 3558
Re: pH formula?
it's -log[h+] and i doubt we would need to derive it
- Sat Dec 07, 2019 6:40 pm
- Forum: Naming
- Topic: Latin Names
- Replies: 3
- Views: 141
Latin Names
How do you know if an element's name originates from a Latin name like Fe(ferrum)
Re: hacks
naming for what?
- Mon Dec 02, 2019 8:59 am
- Forum: Amphoteric Compounds
- Topic: Identifying Amphoteric Compounds
- Replies: 5
- Views: 405
- Mon Dec 02, 2019 8:51 am
- Forum: Administrative Questions and Class Announcements
- Topic: Final tips
- Replies: 19
- Views: 996
Re: Final tips
Probably go over your midterm, go over homework problems, and examples Lavelle emphasized in class.
- Mon Dec 02, 2019 8:51 am
- Forum: Administrative Questions and Class Announcements
- Topic: Chemistry Community Posts
- Replies: 10
- Views: 604
Re: Chemistry Community Posts
I’m not sure, would like to know to lol
- Mon Dec 02, 2019 8:48 am
- Forum: Identifying Acidic & Basic Salts
- Topic: Final: Strong/ Weak Acids/Bases
- Replies: 11
- Views: 1462
Re: Final: Strong/ Weak Acids/Bases
I think it would be helpful to know them
- Mon Dec 02, 2019 8:47 am
- Forum: Calculating the pH of Salt Solutions
- Topic: pH formula?
- Replies: 69
- Views: 3558
Re: pH formula?
pH=-log[h+]
- Mon Dec 02, 2019 8:47 am
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH calcuations
- Replies: 8
- Views: 424
Re: pH calcuations
I think so, unless he gives us another one
- Fri Nov 29, 2019 2:44 pm
- Forum: SI Units, Unit Conversions
- Topic: midterm/final
- Replies: 18
- Views: 1412
Re: midterm/final
probably like the midterm, mostly calculation with some conceptual problems.
- Fri Nov 29, 2019 2:43 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Strength and Weakness
- Replies: 12
- Views: 1045
Re: Strength and Weakness
compare ka values
- Fri Nov 29, 2019 2:36 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Value of pH
- Replies: 8
- Views: 409
Re: Value of pH
yes it could go below negative. The way you calculate ph is -log[h+]
- Fri Nov 29, 2019 2:32 pm
- Forum: Lewis Acids & Bases
- Topic: HCl vs HF
- Replies: 19
- Views: 1312
Re: HCl vs HF
HCL is a strong acid
- Sun Nov 24, 2019 6:38 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2984594
Re: Post All Chemistry Jokes Here
What's Ba(Na2)?
a banana.
a banana.
- Sun Nov 24, 2019 4:07 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2984594
Re: Post All Chemistry Jokes Here
What weapon can you make from the elements potassium, nickel and iron? A KNiFe.
- Thu Nov 21, 2019 9:27 am
- Forum: Hybridization
- Topic: Quiz 2 Hybridization Question
- Replies: 4
- Views: 310
Re: Quiz 2 Hybridization Question
no hybridization was not on the test
- Thu Nov 21, 2019 9:24 am
- Forum: Hybridization
- Topic: for test 2
- Replies: 7
- Views: 234
Re: for test 2
i dont think so