Question

I need to find delta G but I keeo getting 8722.2...I know the formula, can someone help me? ΔH = -19.2 kJ/mol; ΔS = 261 J/mol·K; T = 315 K

Answer 1

I've tried, I thought, all of the combinations and I can't come up with 8722.2. It would have helped if you had put units on your answer.
DG = DH - TDS
DG = -19.2 kJ/mol -(315)(0.261 kJ/mol)
DG = -19.2 kJ/mol - 82.215 = -101.4 kJ/mol
Check my work.

Answer 2

Ohhh no, I see what i did, I didn't convert the J into kj...okay thank u!

Answer 3

I expect that is the most common student error.