Chapter 16.8, Problem 4CP

Which is true for any polyprotic acid?

a) $K_{\text{a2}}\text{ > }{K}_{{\text{a}}_{\text{1}}}$

b) $K_{\text{a2}}\text{ < }{K}_{{\text{a}}_{\text{1}}}$

c) $K_{\text{a2}}\text{ = }{K}_{{\text{a}}_{\text{1}}}$

d) $K_{\text{a2}}\text{ = }\frac{K_{{\text{a}}_{\text{1}}}}{K_{\text{w}}}$

e) $K_{\text{a2}}\text{ > }\frac{K_{\text{w}}}{K_{{\text{a}}_2}}$