Determine the PH of a 0

Multiple Choice

Determine the pH of a 0.18 mol L^-1 H₂CO₃ solution.Carbonic acid is a diprotic acid whose K_a1 = 4.3 × 10^-7 and K_a2 = 5.6 × 10^-11.

A) 11.00
B) 10.44
C) 5.50
D) 4.31
E) 3.56