Answer to Question #175626 in General Chemistry for sara

Question

At room temperature, which of the following is true for the following equation:

H₂O(s) -> H₂O(l)

Select one:

ΔG is negative. ΔH and ΔS are positive.

ΔG and ΔH are positive. ΔS is negative. 

ΔG is positive. ΔH and ΔS are negative.

ΔG and ΔS are negative. ΔH is positive.

Answer 1

Free energy change for a reaction going in one direction is the negative of the ΔG for the reaction going in the opposite direction. So that the ΔG for the reaction: H2O (liquid) ⇌ H2O (gas) is –ΔG for the reaction H2O (gas) ⇌ H2O (liquid).

Therefore, ΔG is positive. ΔH and ΔS are negative is true.