The pH of an acidic buffer is 4.8794. Its pH changes to 4.8864 on addition of 0.005 moles of NaOH to 1 litre of the solution. Calculate its buffer capacity.

Explanation

Number of moles of NaOH added to 1 litre of the solution=0.005
Change in pH = 4.8864 -4.8794 -0.007 Buffer capacity
`("Number of moles of base added to 1 litre")/("Change in pH ") `
` " " = (0.005)/(0.007) = 0.714 `