Problem 4: Answer following questions (2.5 Points)

Derive a general expression for the change in

entropy of a system during a process.

Derive an expression for change in the entropy of

a system during a constant-volume process.

Derive an expression for change in the entropy of

a system during a constant-pressure process.

Derive an expression for change in the entropy of

a system during an isothermal process.

Derive an expression for change in the entropy of

a system during a polytropic process.