the second law states that where ds ge dqt for a

Question

The second law states that
where dS ≥ dQ/T for a reversible process and dS = dQ/T for an irreversible process.  

a.  Show that since dW₁₂ = -dW₂₁ (dW_reverse = -dW_forward) for a reversible process, then dQ₁₂ = TdS₁₂

b.  An egg, initially at rest, is dropped onto the floor.  Prove that this process is irreversible.  You can assume that the egg returns to its initial temperature after it breaks.