Question

The latent heat of vaporisation of water at 100° C is 540 cal g⁻¹. Calculate the entropy increase when one mole of water at 100°C is evaporated?
(a) 1.82 cal K⁻¹ mol⁻¹
(b) 540 × 18 cal K⁻¹ mol⁻¹
(c) 26 cal K⁻¹ mol⁻¹
(d) 367 cal K⁻¹ mol⁻¹

Answer 1

Explanation:

The latent heat of vaporisation of water at 100° C is 540 cal g⁻¹. Calculate the entropy increase when one mole of water at 100°C is evaporated?

(a) 1.82 cal K⁻¹ mol⁻¹

(b) 540 × 18 cal K⁻¹ mol⁻¹✔️✔️✔️

(c) 26 cal K⁻¹ mol⁻¹

(d) 367 cal K⁻¹ mol⁻¹