Which solution contains maximum number of ${H^ + }$ ion
$0.1\, M$ $HCl$
$0.1 \,M$ $N{H_4}Cl$
$0.1\, M$ $NaHC{O_3}$
$0.1 \,M$ $Na_2C{O_3}$
For a weak acid $HA,$ Ostwald's dilution law is represented by the equation
In $20\,\, ml \,\,0.4 \,M-HA$ solution, $80\,\, ml$ water is added. Assuming volume to be additive, the $pH$ of final solution is
$(K_a \,\,of\,\, HA = 4 \times 10^{-7} ,\, log\,2 = 0.3)$
What is $[{H^ + }]$ of a solution that is $0.01\,M$ in $HCN$ and $0.02\,M$ in $NaCN$ $({K_a}$for $HCN = 6.2 \times {10^{ - 10}})$
Derive the equation of ionization constants ${K_a}$ of weak acids $HX$.
A monoprotic acid in a $0.1\,\,M$ solution ionizes to $0.001\%$. Its ionisation constant is