Delta S and Delta H!! Please help!

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pharmvsu

Accepted Pharmacy Student
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I need some help with this question:

Predict the sign of delta H and delta S and how those affect the magnitude of K.

2 Mg(s) + O_2_(s) yields 2MgO(s)

a) K>0 and increasing with increasing T
b) K<0 and decreasing with increasing T
c) K>0 and decreasing with increasing T
d) K<0 and increasing with increasing T

The answer is C. and i dont understand why because I was thinking the reaction is nonspontaneous (-delta S) so delta G is (+), and I thought if delta G was positive K is small (K<0). I know the equation G=H-TS has something to do with it but I have not idea why this answer is C. Please Help!!!!!

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