5I.13 c

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Gabriella Bates 2L
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Joined: Thu Jul 11, 2019 12:15 am

5I.13 c

Postby Gabriella Bates 2L » Wed Jan 15, 2020 8:26 pm

Use your results from parts (a) and (b) to determine which is thermodynamically more stable relative to its atoms at 1000. K, Cl2 or F2.

The Kc for Cl2 was 1.2 x 10^-7 and the Kc for F2 was 1.2 x 10^-4. Why is Cl2 more stable than F2? Does stability just mean that the reactants (either Cl2 or F2 in this case) will not dissociate as easily? Thanks in advance!

Posts: 94
Joined: Fri Aug 09, 2019 12:16 am

Re: 5I.13 c

Postby claudia_1h » Wed Jan 15, 2020 8:32 pm

Cl2 is more thermodynamically stable because it has a lower relative concentration of Cl products to its Cl2 reactants than F to its F2 reactants. So, Cl2 is more likely to remain than F2, meaning it is more stable. This can also be determined from the fact that Cl2 is a smaller Kc: less products on top of ratio = smaller Kc.

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