When 1 kg of ice at 0°C melts to water at 0°C, the resulting

Home » Thermal Physics » Thermodynamics » Question

When 1 kg of ice at 0°C melts to water at 0°C, the resulting change in its entropy, taking latent heat of ice to be 80 cal/°C, is

1. 273 cal/K
2. 8 × 10⁴ cal/K
3. 80 cal/K
4. 293 cal/K

Correct Option: D

Change in entropy is given by

dS =	dQ	or ∆S =	∆Q	=	mL_T
	T		T		273

∆S =	1000 × 80	= 293 cal /K
	273