Search found 51 matches

by Anushka Chauhan2B
Sun Mar 15, 2020 1:22 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Kelvin or Celsius?
Replies: 47
Views: 527

Re: Kelvin or Celsius?

kelvin
by Anushka Chauhan2B
Sun Mar 15, 2020 1:18 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 275
Views: 120667

Re: Saying Thank You to Dr. Lavelle

Thank you Dr. Lavelle for being such an enthusiastic professor and caring for your students. It truly makes a difference!
by Anushka Chauhan2B
Mon Mar 09, 2020 9:23 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: k'
Replies: 6
Views: 33

Re: k'

It’s the constant for the reverse reaction
by Anushka Chauhan2B
Mon Mar 09, 2020 9:22 pm
Forum: General Science Questions
Topic: Final
Replies: 7
Views: 64

Re: Final

You should probs study it just in case
by Anushka Chauhan2B
Mon Mar 09, 2020 9:21 pm
Forum: General Science Questions
Topic: Test 2 Grades [ENDORSED]
Replies: 23
Views: 288

Re: Test 2 Grades [ENDORSED]

During disc
by Anushka Chauhan2B
Mon Mar 09, 2020 9:20 pm
Forum: Student Social/Study Group
Topic: Final
Replies: 21
Views: 160

Re: Final

We’re probably taking the final at the designated location
by Anushka Chauhan2B
Mon Mar 09, 2020 9:18 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Units for n
Replies: 5
Views: 34

Re: Units for n

n has mols for units
by Anushka Chauhan2B
Sun Mar 01, 2020 5:19 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2
Replies: 15
Views: 128

Re: Test 2

Second page of outline 4 and all of 5
by Anushka Chauhan2B
Sun Mar 01, 2020 5:17 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: salt bridge
Replies: 11
Views: 41

Re: salt bridge

It helps maintain the balance of the charges
by Anushka Chauhan2B
Sun Mar 01, 2020 5:16 pm
Forum: General Science Questions
Topic: Studying
Replies: 19
Views: 113

Re: Studying

Notes, homework, and textbook reading
by Anushka Chauhan2B
Sun Mar 01, 2020 5:15 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: cell potential
Replies: 15
Views: 53

Re: cell potential

Delta G will be negative meaning the reaction is spontaneous, if Ecell is positive. However, if Ecell is negative, deltaG will be positive. This means that the reaction will not be spontaneous
by Anushka Chauhan2B
Sun Feb 23, 2020 8:54 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Boltzmann Formula
Replies: 11
Views: 112

Re: Boltzmann Formula

W = (#of states)^(# atoms)
by Anushka Chauhan2B
Sun Feb 23, 2020 8:53 pm
Forum: Balancing Redox Reactions
Topic: Flow of electrons
Replies: 11
Views: 56

Re: Flow of electrons

Anode to cathode
by Anushka Chauhan2B
Sun Feb 23, 2020 8:52 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: work
Replies: 8
Views: 56

Re: work

When energy leaves the system, work is negative
by Anushka Chauhan2B
Sun Feb 23, 2020 8:49 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: voltage
Replies: 8
Views: 38

Re: voltage

The potential difference between two electrodes
by Anushka Chauhan2B
Sun Feb 23, 2020 8:47 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cathode vs Anode
Replies: 11
Views: 49

Re: Cathode vs Anode

The anode is where oxidation happens and the cathode is where reduction happens
by Anushka Chauhan2B
Sun Feb 16, 2020 11:17 pm
Forum: Phase Changes & Related Calculations
Topic: Fusion = Melting?
Replies: 7
Views: 74

Re: Fusion = Melting?

fusion means melting
by Anushka Chauhan2B
Sun Feb 16, 2020 11:15 pm
Forum: Balancing Redox Reactions
Topic: oxidation vs reduction
Replies: 19
Views: 132

Re: oxidation vs reduction

reduction occurs when there is a gain of electrons during the reaction. Oxidation is when there's a loss of electrons during the reaction
by Anushka Chauhan2B
Sun Feb 16, 2020 11:14 pm
Forum: Phase Changes & Related Calculations
Topic: Negative Work
Replies: 18
Views: 143

Re: Negative Work

Work is being done by the system
by Anushka Chauhan2B
Sun Feb 16, 2020 11:13 pm
Forum: General Science Questions
Topic: homework for week 7
Replies: 7
Views: 58

Re: homework for week 7

Maybe 5G from thermo
by Anushka Chauhan2B
Sun Feb 16, 2020 11:11 pm
Forum: Balancing Redox Reactions
Topic: Memorizing charges
Replies: 11
Views: 71

Re: Memorizing charges

Just know the common ones
by Anushka Chauhan2B
Sun Feb 16, 2020 11:10 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: What is residual entropy?
Replies: 11
Views: 950

Re: What is residual entropy?

Residual entropy is the entropy that remains after molecules stop moving (due to the orientation of the atoms of the molecule) at 0 degrees kelvin
by Anushka Chauhan2B
Mon Feb 10, 2020 1:55 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: What is residual entropy?
Replies: 11
Views: 950

Re: What is residual entropy?

The residual entropy is the entropy that is in a substance at 0 degrees Kelvin
by Anushka Chauhan2B
Mon Feb 10, 2020 1:54 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: q rev
Replies: 9
Views: 59

Re: q rev

heat for the reversible reaction
by Anushka Chauhan2B
Mon Feb 10, 2020 1:53 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Extra Practice
Replies: 4
Views: 68

Re: Extra Practice

do the homework problems
by Anushka Chauhan2B
Mon Feb 10, 2020 1:51 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Cp v.Cv
Replies: 6
Views: 54

Re: Cp v.Cv

CV is the molar specific heat at constant volume, while CP is the molar specific heat at constant pressure
by Anushka Chauhan2B
Mon Feb 10, 2020 1:50 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: spontaneity
Replies: 18
Views: 88

Re: spontaneity

spontaneous if delta g is negative
by Anushka Chauhan2B
Sun Feb 02, 2020 10:54 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Hess’ Law
Replies: 10
Views: 62

Re: Hess’ Law

the total enthalpy change for the reaction is the sum of all changes
by Anushka Chauhan2B
Sun Feb 02, 2020 10:50 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Constant Volume and Pressure
Replies: 7
Views: 37

Re: Constant Volume and Pressure

The volume and pressure is fixed so it will not change during the reaction
by Anushka Chauhan2B
Sun Feb 02, 2020 10:40 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Phase change
Replies: 20
Views: 113

Re: Phase change

It should be positive
by Anushka Chauhan2B
Sun Feb 02, 2020 10:39 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Steam burns
Replies: 8
Views: 39

Re: Steam burns

The stem releases more energy than boiling water
by Anushka Chauhan2B
Sun Jan 26, 2020 10:25 pm
Forum: Ideal Gases
Topic: Kc vs Kp
Replies: 43
Views: 308

Re: Kc vs Kp

Kp should be used for gases since you are dealing with partial pressures
by Anushka Chauhan2B
Sun Jan 26, 2020 10:23 pm
Forum: Ideal Gases
Topic: Determining N
Replies: 9
Views: 60

Re: Determining N

Use gases
by Anushka Chauhan2B
Sun Jan 26, 2020 10:19 pm
Forum: Ideal Gases
Topic: R Constant
Replies: 26
Views: 171

Re: R Constant

The one with similar units in the problem so that the units can cancel
by Anushka Chauhan2B
Sun Jan 19, 2020 10:35 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Effect of increasing pressure on reactions
Replies: 6
Views: 53

Re: Effect of increasing pressure on reactions

If the pressure is increased, equilibrium is disrupted. As a result, the reaction would shift to the side with the fewest number of moles.
by Anushka Chauhan2B
Sun Jan 19, 2020 10:33 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: pKa
Replies: 13
Views: 70

Re: pKa

Lower pKa corresponds to a stronger acid.
by Anushka Chauhan2B
Sun Jan 19, 2020 10:27 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Quadratic Equation
Replies: 8
Views: 44

Re: Quadratic Equation

Use the quadratic equation when x is not less than 10^-3
by Anushka Chauhan2B
Sun Jan 19, 2020 10:26 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K vs Q
Replies: 14
Views: 57

Re: K vs Q

K is calculated when the reaction is at equilibrium. Q is when the reaction is not at equilibrium.
by Anushka Chauhan2B
Sun Jan 19, 2020 10:22 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: K less than 10^-3
Replies: 5
Views: 43

Re: K less than 10^-3

Reaction sits to the left when K is less than 10^-3
by Anushka Chauhan2B
Sun Jan 12, 2020 12:10 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE box
Replies: 9
Views: 54

Re: ICE box

Concentration can never be negative, so disregard the negative value.
by Anushka Chauhan2B
Sat Jan 11, 2020 11:42 pm
Forum: Ideal Gases
Topic: PV = nRT
Replies: 16
Views: 99

Re: PV = nRT

P is pressure
V is volume
n is number of moles
R is the ideal gas constant
T is temp
In this unit, remember that n/v is molarity and can allow us to calculate concentration when given pressure.
by Anushka Chauhan2B
Sat Jan 11, 2020 11:35 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Catalysts
Replies: 7
Views: 46

Re: Catalysts

When a catalyst is added to a reaction, it speeds up both the rate of the forward reaction and the reverse reaction. However, there is no change in the position of the equilibrium. Rather, equilibrium is reached faster.
by Anushka Chauhan2B
Sat Jan 11, 2020 11:30 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Q vs K
Replies: 13
Views: 112

Re: Q vs K

The value of K is determined when the reaction is at equilibrium, while the value of Q is when the reaction is not at equilibrium.
by Anushka Chauhan2B
Sat Jan 11, 2020 11:24 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quadratic Equation
Replies: 3
Views: 28

Re: Quadratic Equation

It helps us figure out the final concentrations. On that note, remember to disregard any negative values when calculating concentration, as concentration can never be negative.

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