Question

Which one of the following pairs cannot be mixed together to form a buffer solution? Which...

Which one of the following pairs cannot be mixed together to form a buffer solution?

Which one of the following pairs cannot be mixed together to form a buffer solution?

NaOH, HCl
NaF, HF
HC2H3O2, NaOH (C2H3O2- = acetate)
NaClO, HNO3
NH2CH3, HCl
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Answer #1

Answer : The one of the following above given pairs cannot be mixed together to form a buffer solution which is shown as follows :

NaOH, HCl

This is due to the fact that in the pair i.e. NaOH and HCl; NaOH is the strong base and HCl is the strong acid and in solution they undergo the neutralization reaction and form the neutral salt i.e. sodium chloride and thus cannot serve as the buffer solution since the strong acid and strong base will react totally to form neutral salt. Hence the pair of strong acid and strong base cannot form the buffer solution.

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