4. Each buffer region contains a buffer, a mixture of a weak acid and conjugate based. If a titration of H2C2O4 was undertaken, there would be 2 distinict buffer regions. a) Give the structures of the acid and the conjugate base for the first buffer region. What is the pH when the concentraiton of the acid is equal to the concentrtaion of the base? b) Give the structures of the acid and the conjugate base for the second buffer region. What is the pH when the concentraiton of the acid is equal to the concentrtaion of the base