Higher the amount of acid or base used to produce a definite change of pHin a buffer solutions, higher will be its buffer capacity . Buffer capacityof solution is maximum under the following conditions: [Salt ]= [Acid ](in acid buffer ),[Salt ]=[Base] (in base buffer)pH of a buffer solution lies in the range given below : pH= pK_a +1 In other words any buffer solutions can be used as buffer up two pH units only. depending uponthe value of pK_a or pK_b .A buffer is said to be efficient when pH =pK_a or pOH =pK_b , Buffer capacityis maximum when:

Higher the amount of acid or base used to produce a definite change of

1.	Higher the amount of acid or base used to produce a definite change of pHin a buffer solutions, higher will be its buffer capacity . Buffer capacityof solution is maximum under the following conditions: [Salt ]= [Acid ](in acid buffer ),[Salt ]=[Base] (in base buffer)pH of a buffer solution lies in the range given below : pH= pK_a +1 In other words any buffer solutions can be used as buffer up two pH units only. depending uponthe value of pK_a or pK_b .A buffer is said to be efficient when pH =pK_a or pOH =pK_b , Buffer capacityis maximum when:
Answer» ONE MOLE of `NH_4 CL` is added to one mole of `NH_4 OH` one mole of `NH_4 OH ` is added to one mole of HCl one mole of `NH_4 Cl ` is added to one mole of NaOH one mole of `NACL ` is added to one mole of NaOH Solution :` [B] =[S] `