Search found 32 matches

by Arshpreet Sandhu 1B
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: 208

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-
by Arshpreet Sandhu 1B
Sat Mar 17, 2018 11:23 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Pre equilibrium
Replies: 5
Views: 346

Re: Pre equilibrium

They are both acceptable.
by Arshpreet Sandhu 1B
Sat Mar 17, 2018 11:19 pm
Forum: *Alkanes
Topic: Final
Replies: 13
Views: 1180

Re: Final

Yeah we will need to know functional groups (focus on the examples professor gave in lecture)
by Arshpreet Sandhu 1B
Sat Mar 17, 2018 11:15 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Final
Replies: 3
Views: 221

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.
by Arshpreet Sandhu 1B
Sun Mar 11, 2018 7:46 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: What is Molecularity?
Replies: 9
Views: 759

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.
by Arshpreet Sandhu 1B
Sun Mar 11, 2018 7:43 pm
Forum: Second Order Reactions
Topic: molecularity
Replies: 6
Views: 393

Re: molecularity

Yeah, you calculate molecularity by the number of reactants in a reaction.
by Arshpreet Sandhu 1B
Sun Mar 11, 2018 7:36 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: K
Replies: 7
Views: 254

Re: K

I think change in temp and activation energy change the value of k for a reaction.
by Arshpreet Sandhu 1B
Sun Mar 04, 2018 9:51 pm
Forum: General Rate Laws
Topic: Stoichiometry coefficients
Replies: 3
Views: 152

Re: Stoichiometry coefficients

The rate law cannot be determined only from the stoichiometric coefficients of a reaction.
by Arshpreet Sandhu 1B
Sun Mar 04, 2018 9:47 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Reaction Mechanism
Replies: 2
Views: 110

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."
by Arshpreet Sandhu 1B
Sun Mar 04, 2018 9:40 pm
Forum: General Rate Laws
Topic: Test #3
Replies: 1
Views: 82

Re: Test #3

We will be tested on 15.1-15.6 and I think that's up to problem #39
by Arshpreet Sandhu 1B
Sun Mar 04, 2018 9:32 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius Reaction
Replies: 6
Views: 196

Re: Arrhenius Reaction

It won't be tested on Test #3
by Arshpreet Sandhu 1B
Sun Mar 04, 2018 9:29 pm
Forum: First Order Reactions
Topic: k
Replies: 16
Views: 623

Re: k

I would keep it in seconds unless another unit is specified in the problem
by Arshpreet Sandhu 1B
Sun Mar 04, 2018 9:27 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Quiz 3
Replies: 6
Views: 280

Re: Quiz 3

Yea
by Arshpreet Sandhu 1B
Sun Feb 18, 2018 7:37 pm
Forum: Balancing Redox Reactions
Topic: Balancing redox rxns [ENDORSED]
Replies: 7
Views: 261

Re: Balancing redox rxns [ENDORSED]

^ The toolbox lists out the steps
by Arshpreet Sandhu 1B
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: 154

Re: E equations

One uses ln (natural log) and the other uses log base of 10
by Arshpreet Sandhu 1B
Sun Feb 18, 2018 7:25 pm
Forum: Balancing Redox Reactions
Topic: Bruincast
Replies: 4
Views: 212

Re: Bruincast

I don't think Lavelle's class is Bruincasted
by Arshpreet Sandhu 1B
Sun Feb 18, 2018 7:24 pm
Forum: Balancing Redox Reactions
Topic: Balancing Redox reactions
Replies: 3
Views: 149

Re: Balancing Redox reactions

You should balance the O first
by Arshpreet Sandhu 1B
Sun Feb 18, 2018 7:22 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: State Functions
Replies: 3
Views: 181

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.
by Arshpreet Sandhu 1B
Sun Feb 18, 2018 7:19 pm
Forum: Balancing Redox Reactions
Topic: Helpful Videos
Replies: 4
Views: 187

Re: Helpful Videos

by Arshpreet Sandhu 1B
Sun Feb 04, 2018 9:44 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: state functions
Replies: 3
Views: 102

Re: state functions

Yeah you're right free energy is a state function
by Arshpreet Sandhu 1B
Sun Feb 04, 2018 9:41 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Spontaneous
Replies: 14
Views: 419

Re: Spontaneous

delta G has to be negative in order for a reaction to be considered spontaneous
by Arshpreet Sandhu 1B
Sun Feb 04, 2018 9:38 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Content Question
Replies: 4
Views: 223

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
by Arshpreet Sandhu 1B
Sun Feb 04, 2018 9:36 pm
Forum: Phase Changes & Related Calculations
Topic: Endothermic or Exothermic
Replies: 20
Views: 559

Re: Endothermic or Exothermic

exothermic due to heat release
by Arshpreet Sandhu 1B
Sun Feb 04, 2018 9:34 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Content Question
Replies: 4
Views: 223

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
by Arshpreet Sandhu 1B
Sun Feb 04, 2018 9:30 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: sign of q
Replies: 7
Views: 235

Re: sign of q

q of system= -q of surroundings
by Arshpreet Sandhu 1B
Thu Feb 01, 2018 10:52 am
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: unit of entropy
Replies: 11
Views: 358

Re: unit of entropy

J/K or J x K^-1
by Arshpreet Sandhu 1B
Sun Jan 21, 2018 10:32 pm
Forum: Phase Changes & Related Calculations
Topic: Test 1 [ENDORSED]
Replies: 7
Views: 331

Re: Test 1 [ENDORSED]

We also don't need to know equation 4 on page 266 for test 1
by Arshpreet Sandhu 1B
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: 90

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.
by Arshpreet Sandhu 1B
Sun Jan 21, 2018 5:14 pm
Forum: Administrative Questions and Class Announcements
Topic: Integrated Exercise and Applied Exercises
Replies: 1
Views: 97

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?
by Arshpreet Sandhu 1B
Fri Jan 12, 2018 9:02 pm
Forum: Administrative Questions and Class Announcements
Topic: HW for week 2 disc
Replies: 5
Views: 242

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.
by Arshpreet Sandhu 1B
Fri Jan 12, 2018 7:59 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat capacity
Replies: 4
Views: 210

Re: Heat capacity

Yes heat capacity is an extensive property and not an intensive property
by Arshpreet Sandhu 1B
Fri Jan 12, 2018 7:55 pm
Forum: Phase Changes & Related Calculations
Topic: Endo and Exothermic Ways to Remember
Replies: 28
Views: 3020

Re: Endo and Exothermic Ways to Remember

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

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