Question

At temperatures above 0 C, what is the sign of the change in free energy for the conversion of liquid water to ice?
A. Not known
B. Negative
C. Positive
D. Zero

Answer 1

@aaronq

Answer 2

when the reaction is spontaneous, delta G < 0, and when the reaction "wants" to run in the reverse direction, delta G > 0.

Answer 3

so above 0'C conversion of liquid water to ice is non-spontaneous and delta G is positive