Search found 30 matches

by riddhiduggal
Fri Mar 15, 2019 11:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Approximation & Cubic Equations on Final
Replies: 2
Views: 212

Re: Approximation & Cubic Equations on Final

Didn't he say on the midterm to not approximate when we weren't supposed to?
by riddhiduggal
Fri Mar 15, 2019 11:06 pm
Forum: Zero Order Reactions
Topic: Zero-order reactions
Replies: 4
Views: 196

Re: Zero-order reactions

I think it is M.s^-1
by riddhiduggal
Fri Mar 15, 2019 11:05 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: writing rate laws: "rate"or "d[A]/dt?"
Replies: 1
Views: 38

Re: writing rate laws: "rate"or "d[A]/dt?"

I think it's the same, but we've just been writing rate.
by riddhiduggal
Fri Mar 15, 2019 11:04 pm
Forum: Administrative Questions and Class Announcements
Topic: Deriving
Replies: 3
Views: 232

Re: Deriving

Yeah I agree, and probably if he went in depth on how to derive it in class.
by riddhiduggal
Fri Mar 15, 2019 11:03 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Nernst Equation and pH
Replies: 2
Views: 63

Re: Nernst Equation and pH

Use Nernst to find K, and then solve the equilibrium expression for concentration and then pH.
by riddhiduggal
Fri Mar 15, 2019 11:02 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Test 2 help!
Replies: 3
Views: 73

Re: Test 2 help!

you have to take K and set up the expression and then use it to solve for pH.
by riddhiduggal
Fri Mar 15, 2019 11:00 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Concentration Q
Replies: 2
Views: 52

Re: Concentration Q

it is set up the same as K, but it is not at equilibrium.
by riddhiduggal
Fri Mar 15, 2019 10:57 pm
Forum: General Rate Laws
Topic: Determining rate order
Replies: 3
Views: 65

Re: Determining rate order

you can use any of them, but you have to use all the values of that experiment consistently.
by riddhiduggal
Fri Mar 15, 2019 10:55 pm
Forum: General Rate Laws
Topic: Final
Replies: 9
Views: 227

Re: Final

I think that since the TAs do the grading they are more lenient on sig figs, but units are very important.
by riddhiduggal
Fri Mar 15, 2019 10:54 pm
Forum: General Rate Laws
Topic: rate laws
Replies: 6
Views: 90

Re: rate laws

the stoichiometric coefficients actually aren't used in the rate law.
by riddhiduggal
Fri Mar 15, 2019 10:53 pm
Forum: General Rate Laws
Topic: Rate laws
Replies: 2
Views: 59

Re: Rate laws

Yes, rate and differential rate law are the same.
by riddhiduggal
Fri Mar 15, 2019 10:51 pm
Forum: General Rate Laws
Topic: Unique Reaction Rates [ENDORSED]
Replies: 28
Views: 58349

Re: Unique Reaction Rates [ENDORSED]

When do we use the instantaneous rate versus the unique rates?
by riddhiduggal
Fri Mar 15, 2019 10:50 pm
Forum: Administrative Questions and Class Announcements
Topic: Lyndon's Review Sheets
Replies: 9
Views: 524

Re: Lyndon's Review Sheets

is he posting the answers 9 am or the worksheet?
by riddhiduggal
Fri Mar 15, 2019 10:47 pm
Forum: Administrative Questions and Class Announcements
Topic: DOWNLOAD SESSION WORKSHEETS HERE - Sun 7-9PM (Karen)
Replies: 179
Views: 7304

Re: DOWNLOAD SESSION WORKSHEETS HERE - Sun 7-9PM (Karen)

Amy Dinh 1A wrote:On #4a Worksheet 2, I keep getting pH=4.40, while the answer key says 4.30, when both using the quadratic formula and the shortcut way. I don't understand how to get the answer to


The pH is 4.40
by riddhiduggal
Fri Mar 15, 2019 10:43 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram and Ecell [ENDORSED]
Replies: 6
Views: 27231

Re: Cell Diagram and Ecell [ENDORSED]

In which cases do you flip the sign for the E, when calculating Ecell?
by riddhiduggal
Fri Mar 15, 2019 10:41 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 209
Views: 97380

Re: Saying Thank You to Dr. Lavelle

Thank you Dr. Lavelle, for your countless resources for help, and your enthusiastic attitude in lecture.
by riddhiduggal
Fri Mar 15, 2019 10:39 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Test 2 Question 7
Replies: 2
Views: 180

Re: Test 2 Question 7

They are both spontaneous because they are both approaching equilibrium.
by riddhiduggal
Fri Mar 15, 2019 10:24 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Rate constants at equilibrium
Replies: 5
Views: 88

Re: Rate constants at equilibrium

no, it is dependent on the K
by riddhiduggal
Fri Mar 15, 2019 10:23 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Catalysts
Replies: 2
Views: 57

Re: Catalysts

Also, intermediates have to be formed and then consumed.
by riddhiduggal
Fri Mar 15, 2019 10:20 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Deriving
Replies: 3
Views: 67

Re: Deriving

I think if he went through the steps in class, he expects it of us.
by riddhiduggal
Tue Jan 22, 2019 2:40 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Rounding within the Problem
Replies: 2
Views: 71

Re: Rounding within the Problem

I think we round at the end, and use exact numbers till then.
by riddhiduggal
Tue Jan 22, 2019 2:38 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ignoring x
Replies: 10
Views: 143

Re: ignoring x

You can ignore x when it is less than 10^-3 which is very small and insubstantial
by riddhiduggal
Thu Jan 17, 2019 6:52 pm
Forum: Administrative Questions and Class Announcements
Topic: Chem 14b weekly homework
Replies: 2
Views: 76

Re: Chem 14b weekly homework

All you have to do is write the question numbers, in order, and show your work.
by riddhiduggal
Fri Jan 11, 2019 6:22 pm
Forum: Ideal Gases
Topic: Definition of Ideal Gases?
Replies: 2
Views: 57

Re: Definition of Ideal Gases?

it refers to gases at STP- standard temperature and pressure
by riddhiduggal
Fri Jan 11, 2019 6:11 pm
Forum: Ideal Gases
Topic: Units
Replies: 19
Views: 238

Re: Units

You should always convert temperatures to Kelvin in PV=nRT
by riddhiduggal
Fri Jan 11, 2019 6:03 pm
Forum: Ideal Gases
Topic: Q and K [ENDORSED]
Replies: 35
Views: 1130

Re: Q and K [ENDORSED]

K and Q are calculated in the same way.

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