In a buffer solution having equal concentrations of B - and HB the value of K b for B - is 1 0 - 9 . The pH of buffer solution is

Question

Aicharya · Accepted Answer

For acidic buffer pH can be find out as follows

pH = pKa + lo g_{10} \frac{[s a l t]}{[a c i d]}

As here

K_{b} = 1 0^{- 9}

So

K_{a} = 1 0^{- 5}

p K_{a} = 5

As

pH = 5 + l o g_{10} \frac{[B^{-}]}{[H B]}

As

[B^{-}] = [HB]

pH = 5 + log 1 = 5 + 0 = 5

In a buffer solution having equal concentrations of B - and HB the value of K b for B - is 1 0 - 9 . The pH…