calculate the increase in entropy when 1gm of ice at -10C is converted into steam at 100C. specific heat of ice=0.5,

Answer 1

The change in entropy will occur in 4 steps .
1) Increase in entropy when temp of ice changes from 263K to 273K
2)Increase in entropy when ice at 273K is transformed into water at same temp
3) Increase in entropy when 1 gm of water of 273K is changed into water at 373k
4) Increase in entropy when 1gm of water at 373K is changed into steam at same temp .

After mathematical calculations in the above mentioned 4 steps and then further adding all those four calculated values the total increase in the entropy will be .... 2.0706cals/K .