If degree of ionisation is $0.01$ of decimolar solution of weak acid $HA$ then $pKa$ of acid is
$5$
$7$
$2$
$3$
$p{K_a}$ of a weak acid is defined as
$5.0$ $pH$ containing solution is dilute $100$ times. Calculate $pH$ of dilute solution.
Derive ${K_a} \times {K_b} = {K_w}$ equation.
A $0.1\, M$ solution of $HF$ is $1\%$ ionized. What is the $K_a$
$HClO$ is a weak acid. The concentration of ${H^ + }$ ions in $0.1\,M$ solution of $HClO\,({K_a} = 5 \times {10^{ - 8}})$ will be equal to