Midterm 2014 Question 8


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Alex Nguyen 3I
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Midterm 2014 Question 8

Postby Alex Nguyen 3I » Tue Feb 09, 2016 2:18 am

I'm confused as to why it is assumed that the potential difference of the cell is going to be negative. We are trying to find the Ka for HF. Is it because we need H and F to be products and HF to be a reactant that we flip the half reactions accordingly?

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Re: Midterm 2014 Question 8

Postby Chem_Mod » Tue Feb 09, 2016 6:04 am

Can you post the full question? Some of the UAs do not have the course reader.

Alex Nguyen 3I
Posts: 100
Joined: Fri Sep 25, 2015 3:00 am

Re: Midterm 2014 Question 8

Postby Alex Nguyen 3I » Tue Feb 09, 2016 9:15 am

Yeah sure.


Calculate the value of Ka for HF.
Can some explain to me the idea behind Ka again as well as why they assumed that potential difference would be negative?


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