Question

Calculate entropy change if 2 moles of water at 373 K are evaporated to vapors at 373 K. Give its units.

Answer 1

Explanation:

Entropy change =

T

b

ΔH

vap

×m

m=18 g(1 mole of H

2

O=18 g of H

2

O)

∴ Entropy change =

373

2.257×10

3

×18

⟹ Entropy change =108.9 JK

−1