Chemistry

Problem

The

[\text{H}^+]

in 0.2 M solution of formic acid is

6.4 \times 10^{-3}

mol litre^-1. To this solution formate is added so as to adjust the conc. of sodium formate to one mol per litre. What will be pH of this solution?

K_a

for

\text{HCOOH}

2.4 \times 10^{-4}

and degree of dissociation of

\text{HCOONa}

is 0.75.