Higher the amount of acid or base used to produce a definite change of pH in a buffer solution,higher will be its buffer capacity. Buffer capacity of 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)pm1, In other words, any buffer solution can be used as buffer up to two pH units only, depending upon the value of pK_(a), or pK_(b),. A buffer is said to be efficient when pH_(a) =pK_(a), or pOH= pk_(b) Which among the following solution will be the most efficient buffer?

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 pH in a buffer solution,higher will be its buffer capacity. Buffer capacity of 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)pm1, In other words, any buffer solution can be used as buffer up to two pH units only, depending upon the value of pK_(a), or pK_(b),. A buffer is said to be efficient when pH_(a) =pK_(a), or pOH= pk_(b) Which among the following solution will be the most efficient buffer?
Answer» `0.1 M CH_3 COONa +0.01 M CH_3 COOH` ` 0.1 M NH_4 Cl +0.1 M NH_4 OH` ` 0.0001 M H COOH +0.002 M HCOONa` All of the above Solution :`[ B] =[S] THEREFORE ` most efficient