Buffer capacity of a buffer solution is x, the volume of 1 M NaOH added to 100 mL of this solution if the change of pH by 1 is

Buffer capacity is the no. of moles or  gram equivalents of strong acid or base  added to 1Lit of soln.to change PH of buffer soln.by 1unit.buffer capacity of solution = x∴   Mole of NaOH is required for 1 L solution = xNow, 1001000(x)=.1x   0.1x = 1 x V           ⇒ V = 0.1 x 1000 = 100x ml