Question

What is the change in entropy per mole associated with the melting of gold? the melting point of gold is 1337k and the â†hfus is 13.2 kj/mol.

Answer 1

The entropy change of the surroundings is driven by heat flow and the heat flow determines the sign of ΔSsurr. It can be calculated by the following expression:

ΔSsurr = -(ΔH) / T

We calculate as follows:

ΔSsurr = -13200 / 1337 = 9.87 J/ K mol

Hope this answers the question. Have a nice day.