Selenic acid is a strong diprotic acid and dissociates according to the following equations:
H2SeO4(aq) <----> H+(aq) + HSeO4-(aq) Ka1 = Large
HSeO4-(aq) <----> H+(aq) + SeO42-(aq) Ka2 = 2.2 × 10-2
Calculate the pH of a 0.0750 M solution of selenic acid.