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

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

1.	A certain buffer solution contains equal concentration of X^(-) " and " HX.The K_(b) " for " X^(-) " is " 10^(-10) .Find the pH of the buffer .
Answer» Solution :`k_(a) . k_(b)^(-14) "" :. K_(a) = (10^(-14))/(10^(-10)) = 10^(-4)` `pH = pka + LOG.([x^(-)])/([HX]) ` ` :. pH = 4 + log. 1/1 = 4 "" :. pH = 4`