Question

In how many of the following, ∆S is positive?

i. Melting of ice

ii. Sublimation of iodine

iii. Dissolution of CuSO₄ in water

iv. Condensation of water vapour

v. Dissociation of H₂ molecule into atoms

vi. Conversion of carbon dioxide gas to dry ice

vii. Vaporization of acetone

Options

• 2

• 3

• 4

• 5

Answer 1

5