## Search found 32 matches

Sat Mar 17, 2018 11:27 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Homework 14.15c : KOH in cell diagram
Replies: 2
Views: 280

### Re: Homework 14.15c : KOH in cell diagram

Yes Ni(s) can be used as an electrode because it is a metal conductor like Pt(s) and will allow for the transfer of e-
Sat Mar 17, 2018 11:23 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Pre equilibrium
Replies: 5
Views: 453

### Re: Pre equilibrium

They are both acceptable.
Sat Mar 17, 2018 11:19 pm
Forum: *Alkanes
Topic: Final
Replies: 13
Views: 1618

### Re: Final

Yeah we will need to know functional groups (focus on the examples professor gave in lecture)
Sat Mar 17, 2018 11:15 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Final
Replies: 3
Views: 294

### Re: Final

I think that is all that will be tested for ochem but you might want to look at the practice exam from Friday's review session for some possible questions that could be asked about ochem.
Sun Mar 11, 2018 7:46 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: What is Molecularity?
Replies: 9
Views: 1271

### Re: What is Molecularity?

In lecture, Lavelle defined molecularity as the number of species in an elementary step. Molecularity of a reaction can be determined by the number of reactants (unimolecular, bimolecular, and termolecular.
Sun Mar 11, 2018 7:43 pm
Forum: Second Order Reactions
Topic: molecularity
Replies: 6
Views: 553

### Re: molecularity

Yeah, you calculate molecularity by the number of reactants in a reaction.
Sun Mar 11, 2018 7:36 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: K
Replies: 7
Views: 433

### Re: K

I think change in temp and activation energy change the value of k for a reaction.
Sun Mar 04, 2018 9:51 pm
Forum: General Rate Laws
Topic: Stoichiometry coefficients
Replies: 3
Views: 246

### Re: Stoichiometry coefficients

The rate law cannot be determined only from the stoichiometric coefficients of a reaction.
Sun Mar 04, 2018 9:47 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Reaction Mechanism
Replies: 2
Views: 169

### Re: Reaction Mechanism

The book says that reaction mechanisms are used "to describe how a reaction takes place" and are a "sequence of elementary reactions or steps that chemists believe take place as reactants are transformed into products."
Sun Mar 04, 2018 9:40 pm
Forum: General Rate Laws
Topic: Test #3
Replies: 1
Views: 122

### Re: Test #3

We will be tested on 15.1-15.6 and I think that's up to problem #39
Sun Mar 04, 2018 9:32 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius Reaction
Replies: 6
Views: 375

### Re: Arrhenius Reaction

It won't be tested on Test #3
Sun Mar 04, 2018 9:29 pm
Forum: First Order Reactions
Topic: k
Replies: 16
Views: 843

### Re: k

I would keep it in seconds unless another unit is specified in the problem
Sun Mar 04, 2018 9:27 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Quiz 3
Replies: 6
Views: 430

### Re: Quiz 3

Yea
Sun Feb 18, 2018 7:37 pm
Forum: Balancing Redox Reactions
Topic: Balancing redox rxns [ENDORSED]
Replies: 7
Views: 447

### Re: Balancing redox rxns[ENDORSED]

^ The toolbox lists out the steps
Sun Feb 18, 2018 7:28 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: E equations
Replies: 3
Views: 287

### Re: E equations

One uses ln (natural log) and the other uses log base of 10
Sun Feb 18, 2018 7:25 pm
Forum: Balancing Redox Reactions
Topic: Bruincast
Replies: 4
Views: 340

### Re: Bruincast

I don't think Lavelle's class is Bruincasted
Sun Feb 18, 2018 7:24 pm
Forum: Balancing Redox Reactions
Topic: Balancing Redox reactions
Replies: 3
Views: 261

### Re: Balancing Redox reactions

You should balance the O first
Sun Feb 18, 2018 7:22 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: State Functions
Replies: 3
Views: 282

### Re: State Functions

State functions are important because they depend only on the initial and final and not the pathway taken. This helps us calculate enthalpy, Gibbs free energy, entropy, etc.
Sun Feb 18, 2018 7:19 pm
Forum: Balancing Redox Reactions
Replies: 4
Views: 317

Sun Feb 04, 2018 9:44 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: state functions
Replies: 3
Views: 167

### Re: state functions

Yeah you're right free energy is a state function
Sun Feb 04, 2018 9:41 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Spontaneous
Replies: 14
Views: 891

### Re: Spontaneous

delta G has to be negative in order for a reaction to be considered spontaneous
Sun Feb 04, 2018 9:38 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Content Question
Replies: 4
Views: 362

### Re: Midterm Content Question

But knowing how an equation is derived may be helpful to have a deeper understanding of how to apply it or manipulate it
Sun Feb 04, 2018 9:36 pm
Forum: Phase Changes & Related Calculations
Topic: Endothermic or Exothermic
Replies: 20
Views: 911

### Re: Endothermic or Exothermic

exothermic due to heat release
Sun Feb 04, 2018 9:34 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Content Question
Replies: 4
Views: 362

### Re: Midterm Content Question

I am pretty sure that we will not be asked to derive the equations but we will be asked to apply them in integrated problems
Sun Feb 04, 2018 9:30 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: sign of q
Replies: 7
Views: 490

### Re: sign of q

q of system= -q of surroundings
Thu Feb 01, 2018 10:52 am
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: unit of entropy
Replies: 11
Views: 617

### Re: unit of entropy

J/K or J x K^-1
Sun Jan 21, 2018 10:32 pm
Forum: Phase Changes & Related Calculations
Topic: Test 1 [ENDORSED]
Replies: 7
Views: 499

### Re: Test 1[ENDORSED]

We also don't need to know equation 4 on page 266 for test 1
Sun Jan 21, 2018 5:20 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Homework 8.85
Replies: 1
Views: 108

### Homework 8.85

Will questions like 8.85 (heat output of reactions) be on Test 1 because we did not really cover it in lecture.
Sun Jan 21, 2018 5:14 pm
Forum: Administrative Questions and Class Announcements
Topic: Integrated Exercise and Applied Exercises
Replies: 1
Views: 145

### Integrated Exercise and Applied Exercises

Are the test 1 question going to be like the integrated exercises and applied exercises of the homework or are those question too detailed?
Fri Jan 12, 2018 9:02 pm
Forum: Administrative Questions and Class Announcements
Topic: HW for week 2 disc
Replies: 5
Views: 373

### Re: HW for week 2 disc

I would do the homework problems related to what we have discussed in lecture so far which has just been material from chapter 8.
Fri Jan 12, 2018 7:59 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat capacity
Replies: 4
Views: 259

### Re: Heat capacity

Yes heat capacity is an extensive property and not an intensive property
Fri Jan 12, 2018 7:55 pm
Forum: Phase Changes & Related Calculations
Topic: Endo and Exothermic Ways to Remember
Replies: 28
Views: 5779

### Re: Endo and Exothermic Ways to Remember

I remember endothermic and exothermic by memorizing that endothermic "absorbs heat" and exothermic "loses heat".