6th edition 14.97


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Kimberly 1H
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6th edition 14.97

Postby Kimberly 1H » Tue Mar 12, 2019 12:00 am

Use the data in Appendix 2B and the fact that, for the half-reaction
F2(g)+2H+(aq)+2e--->2HF(aq), E=3.03 V, to calculate the value of Ka for HF.

The answer key shows that you're supposed to take the square root when you find K of the reaction in order to get Ka, but I'm not sure I understand the reasoning behind it.

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Re: 6th edition 14.97

Postby Chem_Mod » Wed Mar 13, 2019 10:58 am

Because you have 2 moles of HF in your standard reduction potential equation. In Ka expression, it is the dissociation of 1 mole of HF.


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