Answer to Question #85827 in Molecular Physics | Thermodynamics for Ololade Kenny

Question

Calc the change in entropy of a system containing 1kg of ice at 0degree Celsius which melts reversibly to water at d same temperature.latern heat of fusion of melting is 79.6cal/g

Answer 1

Change of entropy (dS)=dQ/T

T is in Kelvin=273K

dQ=mL

m is the mass=1kg=1000gram

L is the latent heat of fusion=79.6cal/g

dS=mL/T

dS=1000X79.6/273

dS=291.57cal/kelvin