The internal energy change when a system goes fromk state `A` to `B` is `40 kJ mol^(-1)`. If the system goes from `A` to `B` by a reversible path and returns to state `A` by an irreversible path, what would be the net change in internal energy?

Options

A. `lt40 k J`
B. Zero
C. `40 kJ`
D. `gt40 k J`

Answer

b

Explanation

In a cyclic process net change in internal energy is zero.