$p O H=p K_{b}+\log \frac{[\text { salt }]}{\text { loase }}$
$p H+p O H=14$
$K_{b}=1 \times 10^{-10},[\text { salt }]=[b a s e]$
$p O H=-\log K_{b}+\log \frac{[\text {salt}]}{[b a s e]}$
$\therefore \quad p O H=-\log \left(1 \times 10^{-10}\right)+\log 1=10$
$p H+p O H=14$$\left[\because \text { concentration of }\left[B^{-}\right]=[H B]\right.$
$p H=14-10=4$
નીચેનામાંથી યોગ્ય નિવેદન પસંદ કરો: