Answer :
Buffer solution is obtained by hendersons hasselbalch equation.
Buffer solution is water based solution which consists of a mixture containing a weak acid and a conjugate base of the weak acid or a weak base and conjugate acid of a weak base.it is a mixture of weak acid and a base.
The pH of the buffer solution is determined by the expression of the henderson hasselbalch equation.
pH=pKa + log[(A-)/(HA)]
Where, pKa =dissociation constant
A- = concentration of the conjugate base
[HA]= concentration of the acid
The buffer solution of ammonium chloride contains a weak base ammonia and a conjugate base ammonium.
Here, a buffer solution contains 0.238 m of ammonia. The volume of the solution is 2.30l and the ph of the buffer solution is 9.02 .By putting all the values we will solve the expression.
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