## Search found 4 matches

Tue Feb 16, 2016 10:14 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Quiz prep how to convert mol^2/l^2
Replies: 1
Views: 406

### Re: Quiz prep how to convert mol^2/l^2

For that question, the reaction is second order with respect to the reactant since the units on k are L x mols -1 x seconds -1 So you are close with that concentration, but the way it should be set up is like so: inital rate=k[A] 0 2 so [A] 0 =(initial rate/k) 1/2 Thus, your units should end up as m...
Tue Feb 09, 2016 9:29 pm
Forum: Balancing Redox Reactions
Topic: pairs of redox couples
Replies: 3
Views: 621

### Re: pairs of redox couples

Yes, this is correct. A positive cell potential is necessary for the reaction to be spontaneous. If you do not have a positive cell potential, then the half reactions are not spontaneous, meaning the cell will not produce a current.
Tue Jan 12, 2016 11:13 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Quiz Prep 1: Winter 2014
Replies: 1
Views: 281

### Re: Quiz Prep 1: Winter 2014

So without seeing your work I can't tell you what you're doing wrong, but I hope this will help. The problem asks for the reaction enthalpy for burning 1 mol of butane. To keep this 1 mol constant, we must balance the equation while maintaining a coefficient of 1 in front of butane. The reaction is ...
Wed Jan 06, 2016 9:41 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Homework Question Ch. 8 #55, Hess's Law
Replies: 2
Views: 246

### Re: Homework Question Ch. 8 #55, Hess's Law

I was having the same issue as you, and I'm assuming that the issue lies in the textbook. The only way to solve the problem is if you go with what is in the solutions manual, because when adding together the two formulas, the O 2 will not cancel out unless you have 3/2 as a coefficient in front of i...