Rank the compounds by stand molar entropy.

Question

F2(g), Ne(g), HF(g)

I am a little confused by this question, wouldn't it be ranked by the molar mass of each compound?

So, F2(g) is the highest and HF(g) is the lowest in entropy?

Answer 1

Standard molar entropy is an extensive property, meaning that it is related to the amount of substance present. In general (but with exceptions), molar entropy increases with molar mass.

So, rank them by mass: Ne>F2>HF

Answer 2

Correct Answer:

Highest to Lowest:
F2
HF
Ne