A certain buffer solution contains equal concentration of X^(-) and HX. K_(b), for X^(-) is 10^(-10). Find the pH of buffer.

A certain buffer solution contains equal concentration of X^(-) and HX

1.	A certain buffer solution contains equal concentration of X^(-) and HX. K_(b), for X^(-) is 10^(-10). Find the pH of buffer.
Answer» <P> Solution :` K_b=10 ^(-10 ), Ka = 10 ^(-4)[X^(-) ]=[HX]` ` PH= P^(Ka) +LOG ""([X^(-)])/([HX])=-log 10 ^(-4)=4`