Acid buffer can be prepared by mixing solutions of:
A
NaCl+NaOH
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B
H2SO4+Na2SO4
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C
NH4OH+NH4Cl
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D
CH3COONa+CH3COOH
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Solution
The correct option is BCH3COONa+CH3COOH a solution of a weak acid + salt of the weakacid and a strong base; is called an acidic buffer and here mixture of CH3COONa and CH3COOH is a mixture of weak acid and its salt of strong base,