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Which of the following mixture in aqueous solution of equimolar concentration acts as a buffer solution?(a) HNO3 + NaOH(b) H2 SO4 + KOH(c) NH4 OH(excess) + HCl(d) CH3 COOH + NaOH(excess) |
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Answer» The correct answer is (c) NH4 OH(excess) + HCl The explanation is: NH4 OH(excess) + HCl → NH4 Cl + H2O So the mixture contains NH4 OH + NH4 Cl. |
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