Search found 12 matches

by Lisa Lim 3G
Wed Mar 09, 2016 7:48 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: final exam winter 2013
Replies: 1
Views: 372

final exam winter 2013

For question 2A on the Winter 2013 Final Exam, how do you figure out the two half reactions (i.e. NADH-> NAD+H+2e- and O2+2H+2e- -> H2O)?
by Lisa Lim 3G
Wed Mar 09, 2016 3:43 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: drawing galvanic cells
Replies: 1
Views: 304

drawing galvanic cells

In the Winter 2012 final exam (found in the course reader) question #3, how do you know which one is the cathode versus the anode?
by Lisa Lim 3G
Wed Mar 09, 2016 2:25 pm
Forum: *Cycloalkanes
Topic: Naming cychlohexane
Replies: 1
Views: 350

Naming cychlohexane

In the first quiz 3 preparation question #5 (of the workbook), why is the compound 3-bromo-1-iodocyclohexane instead of 1-bromo-3-iodocyclohexane? Doesn't the lower number get paired with whichever one comes first alphabetically?
by Lisa Lim 3G
Wed Mar 09, 2016 2:20 pm
Forum: Calculating Work of Expansion
Topic: Final exam winter 2011
Replies: 1
Views: 339

Final exam winter 2011

On question 1B on the Winter 2011 final exam (found in the course reader), why is delta n (gas) equal to -2.00 moles?
by Lisa Lim 3G
Wed Feb 17, 2016 1:26 pm
Forum: Zero Order Reactions
Topic: Units [ENDORSED]
Replies: 7
Views: 1035

Units [ENDORSED]

Does the rate constant k of zero-order reactions always have the units of mole/L*sec?
by Lisa Lim 3G
Fri Feb 05, 2016 10:38 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell potential
Replies: 1
Views: 405

Cell potential

Why is E (cell potential) considered a path function?
by Lisa Lim 3G
Fri Feb 05, 2016 9:22 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Winter 2013 Midterm Q5B
Replies: 1
Views: 356

Winter 2013 Midterm Q5B

Can someone please explain why these substances are ordered in this way? I thought standard molar entropy increased as substances became more complex because of greater number of vibrational/rotational motions.
by Lisa Lim 3G
Fri Feb 05, 2016 8:03 pm
Forum: Balancing Redox Reactions
Topic: Balancing Redox reactions
Replies: 3
Views: 500

Re: Balancing Redox reactions

because it is an intensive property
by Lisa Lim 3G
Sun Jan 31, 2016 2:27 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Galavanic cell question help!
Replies: 1
Views: 250

Re: Galavanic cell question help!

I think the answer is also A because electrons will always float towards the greater cell potential; therefore, it is always positive.

The answer is definitely not C because not all reactions are spontaneous.
by Lisa Lim 3G
Sun Jan 31, 2016 2:23 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1170964

Re: Chemistry Jokes

A: "I blew up my chemistry experiment."
B: "That's ok, oxidants happen."
by Lisa Lim 3G
Sun Jan 17, 2016 3:47 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Reversible vs Irreversible
Replies: 1
Views: 300

Reversible vs Irreversible

How can we tell if a process is reversible or irreversible?
by Lisa Lim 3G
Sat Jan 09, 2016 3:52 pm
Forum: Phase Changes & Related Calculations
Topic: Temperature of Phase Transition
Replies: 2
Views: 288

Temperature of Phase Transition

Can someone explain the difference between heat and temperature? When heat is added, does temperature always increase? Also, can someone elaborate further on why steam causes more severe burns than water? I know it is due to the fact that steam has more energy but why is this so?

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