Asked by Olivia

Use standards entropies and heats of formation to calculate delta Gf at 25C for
a. cadmium (II) chloride (s)
b. methyl alcohol, CH3OH (l)
c. copper (I) sulfide (s)

I really have no idea where to start with this problem. I have no idea how to calculate delta Gf, and everything I've tried hasn't worked.

Answers

Answered by DrBob222
The formation of CdCl2, for example, from its elements, is as follows:
Cd + Cl2 ==> CdCl2
Look up values for So for CdCl2 and Hf for CdCl2. Then dGf = dHf-TdSo

That's all there is to it. For T use 298 K.
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