What Is the Equilibrium PH of a 0 $\times$ 10^-3,K_a2 = 6

Multiple Choice

What is the equilibrium pH of a 0.835 M solution of H₃PO₄(aq) ? (K_a1 = 7.5 $\times$ 10^-3,K_a2 = 6.2 $\times$ 10^-8,K_a3 = 4.8 $\times$ 10^-13)

A) 1.12
B) 3.64
C) 12.32
D) 6.20
E) 7.21