Search found 46 matches

by Abby-Hile-1F
Fri Mar 15, 2019 8:04 pm
Forum: Balancing Redox Reactions
Topic: Ranking in order of increasing reducing power
Replies: 6
Views: 165

Re: Ranking in order of increasing reducing power

Joonsoo Kim 4L wrote:I believe that if E(red) is strongly positive, the reaction favors reduction, so it would be a good oxidizing agent. Contrarily, if E(red) is strongly negative, the reaction favors oxidation, so it would be a good reducing agent.

Ok yeah that makes sense, thank you!
by Abby-Hile-1F
Fri Mar 15, 2019 8:02 pm
Forum: Student Social/Study Group
Topic: Studying for the Final
Replies: 25
Views: 712

Re: Studying for the Final

Eruchi Okpara 2E wrote:Has Lyndon posted his practice exam for the final exam?

Yes, I think its called "pork ramen" lol
by Abby-Hile-1F
Wed Mar 13, 2019 11:17 am
Forum: Balancing Redox Reactions
Topic: Oxidation vs Reduction Half Rxn
Replies: 9
Views: 142

Re: Oxidation vs Reduction Half Rxn

Thank you!
by Abby-Hile-1F
Wed Mar 13, 2019 11:09 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: E cell
Replies: 2
Views: 58

Re: E cell

The cathode is always the reduction half rxn and is on the left side. I'm not sure about overall charge
by Abby-Hile-1F
Wed Mar 13, 2019 11:05 am
Forum: Administrative Questions and Class Announcements
Topic: Class Curve
Replies: 11
Views: 538

Re: Class Curve

I remember him saying that getting below a 50% means you are at risk of failing, but I'm not really sure how he does the final grade.
by Abby-Hile-1F
Wed Mar 13, 2019 11:03 am
Forum: Student Social/Study Group
Topic: Studying for the Final
Replies: 25
Views: 712

Re: Studying for the Final

I'm mostly doing lots of hw problems!
by Abby-Hile-1F
Sun Mar 10, 2019 8:18 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Test 2
Replies: 12
Views: 227

Re: Test 2

If the Gibbs Free energy of a rxn is lees than zero, then that means it will occur spontaneously.
by Abby-Hile-1F
Sun Mar 10, 2019 8:13 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy equations
Replies: 8
Views: 297

Re: Entropy equations

If you have an initial temp and final temp (that is temp is changing and volume is not), then you would use the equation with ln(T2/T1). Versus if its the opposite (temp is constant and volume is changing), the you would use the equation with ln(V2/V1).
by Abby-Hile-1F
Sun Mar 10, 2019 8:09 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Ideal Gas Constants
Replies: 4
Views: 237

Re: Ideal Gas Constants

Do we only need to know the ideal gas constant for monatomic ideal gases and not the others?
by Abby-Hile-1F
Sun Mar 10, 2019 8:08 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Reversible vs irreversible
Replies: 5
Views: 275

Re: Reversible vs irreversible

How can you tell if a rxn is reversible or irreversible?
by Abby-Hile-1F
Sun Mar 10, 2019 8:07 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Useful Summary of Thermodynamic Definitions
Replies: 23
Views: 13614

Re: Useful Summary of Thermodynamic Definitions

will we need to identify processes as isobaric, isochoric, or isothermal?
by Abby-Hile-1F
Sun Mar 10, 2019 7:46 pm
Forum: Balancing Redox Reactions
Topic: Acidic Solutions
Replies: 7
Views: 173

Re: Acidic Solutions

H2O is used to balance oxygens, then since you added extra H with the water, you balance the H2O with H+
by Abby-Hile-1F
Sun Mar 10, 2019 7:45 pm
Forum: Balancing Redox Reactions
Topic: Oxidation vs Reduction Half Rxn
Replies: 9
Views: 142

Oxidation vs Reduction Half Rxn

How do you determine which half rxn is the oxidation half and which is the reduction half? I always get confused on this.
by Abby-Hile-1F
Sun Mar 10, 2019 7:41 pm
Forum: Balancing Redox Reactions
Topic: balancing water
Replies: 8
Views: 170

Re: balancing water

I'm pretty sure if you r final answer has water on both sides you can cancel out no matter what, since that gives the same but a simpler answer.
by Abby-Hile-1F
Sun Mar 10, 2019 7:39 pm
Forum: Balancing Redox Reactions
Topic: Writing half reactions
Replies: 7
Views: 141

Re: Writing half reactions

since oxygen atoms are balanced with H20, you have to then balance the H20 with H+. Because of this, you would put the H+ with the Cr2O7
by Abby-Hile-1F
Sun Mar 10, 2019 7:35 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Order of Cell Diagrams
Replies: 13
Views: 212

Re: Order of Cell Diagrams

How do you know if a reaction requires a platinum electrode?
by Abby-Hile-1F
Sun Mar 10, 2019 7:34 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Order of Cell Diagrams
Replies: 13
Views: 212

Re: Order of Cell Diagrams

Do you use a comma if there is more than one aqueous species?
by Abby-Hile-1F
Sun Mar 10, 2019 7:30 pm
Forum: Balancing Redox Reactions
Topic: Oxidation number?
Replies: 12
Views: 220

Re: Oxidation number?

I know there are some exceptions to this, but how do you know if an element in a particular atom has a different oxidation number than usual (the one indicated by position in the periodic table?
by Abby-Hile-1F
Sun Mar 10, 2019 7:28 pm
Forum: Balancing Redox Reactions
Topic: Ranking in order of increasing reducing power
Replies: 6
Views: 165

Re: Ranking in order of increasing reducing power

How do you tell if something will have reducing or oxidizing power, I know it depends on the sign of E, but which is which?
by Abby-Hile-1F
Sun Feb 10, 2019 4:39 pm
Forum: Phase Changes & Related Calculations
Topic: What exactly is 3/2RT and when do we use it?
Replies: 4
Views: 201

Re: What exactly is 3/2RT and when do we use it?

Do you just use 5/2R when it is at constant pressure?
by Abby-Hile-1F
Sun Feb 10, 2019 4:37 pm
Forum: Phase Changes & Related Calculations
Topic: Work equation
Replies: 4
Views: 109

Re: Work equation

It should be on the equation sheet.
by Abby-Hile-1F
Sun Feb 10, 2019 4:24 pm
Forum: Calculating Work of Expansion
Topic: Derivatives and Integrals
Replies: 5
Views: 105

Re: Derivatives and Integrals

I feel like we won't need to do any calculations with derivatives. I think those equations were given just to help our understanding.
by Abby-Hile-1F
Sun Feb 10, 2019 4:15 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Energy
Replies: 5
Views: 135

Re: Energy

Since neither energy nor matter can be exchanged in an isolated system, the energy cannot change and will remain constant.
by Abby-Hile-1F
Sun Feb 10, 2019 4:14 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Practice Midterm
Replies: 3
Views: 114

Re: Practice Midterm

What time is his review session on Monday?
by Abby-Hile-1F
Sun Feb 10, 2019 4:13 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Constant Pressure/Volume
Replies: 6
Views: 269

Re: Constant Pressure/Volume

So if pressure is not given, can we assume that it will remain constant at 1 atm?
by Abby-Hile-1F
Sun Feb 10, 2019 4:11 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Clarifying about Midterm
Replies: 4
Views: 95

Re: Clarifying about Midterm

In class he said that the only thing we have gone over in class that will not be on the midterm is Gibbs Free Energy.
by Abby-Hile-1F
Sun Jan 13, 2019 3:57 pm
Forum: Student Social/Study Group
Topic: New to Lavelle
Replies: 32
Views: 3561

Re: New to Lavelle

Asking questions on here is usually helpful and you can also just search for a topic and look at other peoples posts to clarify anything you may be confused about.
by Abby-Hile-1F
Sun Jan 13, 2019 3:53 pm
Forum: Ideal Gases
Topic: When to Use PV=nRT
Replies: 8
Views: 209

Re: When to Use PV=nRT

PV=nRT can be used to relate Kc and Kp since you can use it to convert between partial pressure and concentration.
by Abby-Hile-1F
Sun Jan 13, 2019 3:50 pm
Forum: Ideal Gases
Topic: Kc and Kp
Replies: 6
Views: 105

Re: Kc and Kp

Kc can be used for both aqueous and gasphases, but Kp is for gases since you use pressure. And the ideal gas law can be used to relate Kp and Kc
by Abby-Hile-1F
Sat Dec 08, 2018 11:40 pm
Forum: Naming
Topic: order of ligand name
Replies: 5
Views: 291

Re: order of ligand name

name the ligands in alphabetical order (ignoring the greek prefixes)
by Abby-Hile-1F
Sat Dec 08, 2018 11:39 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Polydentate
Replies: 11
Views: 286

Re: Polydentate

How do you specify if a ligand is polydentate when naming the compound?
by Abby-Hile-1F
Sat Dec 08, 2018 11:37 pm
Forum: Biological Examples
Topic: Cisplatin
Replies: 7
Views: 314

Re: Cisplatin

In order for the interaction to be strong enough, the Cl's must be on the same side and must create a net dipole.
by Abby-Hile-1F
Sat Dec 08, 2018 11:34 pm
Forum: Polyprotic Acids & Bases
Topic: Polyprotics on Final
Replies: 3
Views: 272

Re: Polyprotics on Final

How would you be able to tell if something is a polyprotic acid/base?
by Abby-Hile-1F
Sat Dec 08, 2018 11:29 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Ka and Kb on Final
Replies: 9
Views: 262

Re: Ka and Kb on Final

Do we just need to understand the general concepts of Ka and Kb, but will not need to solve anything with them?
by Abby-Hile-1F
Sat Dec 08, 2018 11:26 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Strongs Acids
Replies: 4
Views: 267

Re: Strongs Acids

Is there a list of strong acids posted on the class website?
by Abby-Hile-1F
Sun Nov 11, 2018 7:13 pm
Forum: SI Units, Unit Conversions
Topic: Kiloelectron volt to Joule
Replies: 5
Views: 449

Re: Kiloelectron volt to Joule

I am pretty sure that this conversion factor is on the equation sheet given to us during tests as well.
by Abby-Hile-1F
Sun Nov 11, 2018 7:11 pm
Forum: SI Units, Unit Conversions
Topic: Bond length
Replies: 3
Views: 290

Re: Bond length

Will all bond lengths be in Angstroms?
by Abby-Hile-1F
Sun Nov 11, 2018 4:46 pm
Forum: Lewis Acids & Bases
Topic: Determine Lewis Acid
Replies: 13
Views: 574

Re: Determine Lewis Acid

One thing to look for is if something has a lone pair of electrons, it would be a Lewis base because it would donate those electrons.
by Abby-Hile-1F
Sun Nov 11, 2018 4:44 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Disperson forces
Replies: 4
Views: 95

Re: Disperson forces

larger atoms have more attractive forces between them because they have more electrons, so they they will have stronger dispersion forces holding them closer together and will therefore be liquid at room temp rather than gases.
by Abby-Hile-1F
Sun Nov 11, 2018 4:40 pm
Forum: Coordinate Covalent Bonds
Topic: Electronegativity
Replies: 10
Views: 314

Re: Electronegativity

Electronegativity decreases as you go down a period because the atoms have more shells of electrons, so the valence electrons are farther from the nucleus. This means that the pull on the electrons is not as strong as in the atoms closer to the top of the period.
by Abby-Hile-1F
Sun Nov 11, 2018 4:35 pm
Forum: Resonance Structures
Topic: bond length
Replies: 5
Views: 137

Re: bond length

How would you find the bond length in a resonance structure? Would it just be the average of the different length bonds?
by Abby-Hile-1F
Wed Oct 24, 2018 7:03 pm
Forum: Properties of Light
Topic: Quantum Test
Replies: 11
Views: 407

Re: Quantum Test

For me Khan Academy helps a lot and also watching Lavelle's modules since you can stop if you are confused and rewatch sections that you may not understand.
by Abby-Hile-1F
Wed Oct 03, 2018 7:37 pm
Forum: General Science Questions
Topic: Turning in Homework
Replies: 4
Views: 198

Re: Turning in Homework

Is the homework due in discussion this week? For some reason I thought he said something about turning it in on Friday.
by Abby-Hile-1F
Wed Oct 03, 2018 7:08 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 69
Views: 22583

Re: formula units [ENDORSED]

I was unsure about what the problems meant by formula units as well, but I just treated it as sort of a synonym for "molecule". So one of the problems asked how many formula units of a compound are in 5.15 g, I just found how many molecules would be in 5.15 g, using Avogadro's number.

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