JEE Main 2017Session, Shift 1ChemistryEasyEquilibrium123× since 2002pK_a of a weak acid (HA) and pK_b of a weak base (BOH) are 3.2 and 3.4, respectively. The pH of their salt (AB) solution is :AOption A. 6.9BOption B. 7.0COption C. 1.0DOption D. 7.2CheckSkip · show solution