Question

The pKa of a weak acid HA and pKb of weak base BOH are 4.60 and 4.80 respectively. The pH of 0.1 M solution of the salt, BA formed from the acid HA and base BOH is

Answer 1

TIP

Reaction of WA +WB is Salt hydrolysis

Explanation:

pH= 1/2(pkw + pKa -pKb)

    = 1/2( 14 -0.2)

     = 6.9