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The Ksp of Al(OH)3 is 2.0 × 10–31 at 298 K. What is ∆Gº (at 298 K) for the precipitation of Al(OH)3 Thermodynamics Chemistry Question

Question

The Ksp of Al(OH)3 is 2.0 × 10–31 at 298 K. What is ∆Gº (at 298 K) for the precipitation of Al(OH)3 according to the equation below?
Al3+(aq) + 3 OH–(aq) → Al(OH)3(s)

A.

–175 kJ mol–1

✓ Correct
B.

14.7 kJ mol–1

C.

70.6 kJ mol–1

D.

175 kJ mol–1

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