Posted by **Matt** on Sunday, February 17, 2008 at 5:24pm.

Calculate ∆G (in kJ) at 541 K for the following reaction under the given conditions. Use data obtained from the table below and assume that ∆Hfo and So do not vary with temperature. Report your answer to three significant figures in scientific notation (i.e. 1.23E4).

2 H2S (g) + 3 O2 (g) ⇌ 2 SO2 (g) + 2 H2O (l)

Compound ÄHfo So P (atm)

H2S (g) -20.6 205.81 2.3

O2 (g) 0 205.7 9.9

SO2 (g) -296.81 248.2 6.3

H2O (l) -285.83 69.91 ---

I know how to do the question, I was just confused about the Q value, it turns out to be a negative and so I can't take the ln of it. What do I do?

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