Entropy change for reversible phase transition at constant pressure P and temperatureT is calculated by the formula DeltaS=(DeltaH)/(T), where DeltaH is the enthalpy change for phase transition. For irreversible phase transition DeltaSgt(DeltaH)/(T). Consider a phase transition. Sn("white",s)iffSn("grey,s") DeltaH^(@) at 1 atm and 300K=-2 kJmol^(-1) The equilibrium temperature at 1 atm is 400 K. Assume C_(p,m) of Sn (white,s) and Sn(grey,s) are equal. DeltaS^(@) for above phase transition at 1 atm and 300K is :

Entropy change for reversible phase transition at constant pressure P

1.	Entropy change for reversible phase transition at constant pressure P and temperatureT is calculated by the formula DeltaS=(DeltaH)/(T), where DeltaH is the enthalpy change for phase transition. For irreversible phase transition DeltaSgt(DeltaH)/(T). Consider a phase transition. Sn("white",s)iffSn("grey,s") DeltaH^(@) at 1 atm and 300K=-2 kJmol^(-1) The equilibrium temperature at 1 atm is 400 K. Assume C_(p,m) of Sn (white,s) and Sn(grey,s) are equal. DeltaS^(@) for above phase transition at 1 atm and 300K is :
Answer» `-5JK^(-1)mol^(-1)` `-(20)/(3)JK^(-1)mol^(-1)` `-0.0055JK^(-1)mol^(-1)` `-(2000)/(3)JK^(-1)mol^(-1)` ANSWER :a