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Which of the following will produce

Question:

Which of the following will produce a buffer solution when mixed in equal

volumes?

(i) 0.1 mol dm–3 NH4OH and 0.1 mol dm–3 HCl

(ii) 0.05 mol dm–3 NH4OH and 0.1 mol dm–3 HCl

(iii) 0.1 mol dm–3 NH4OH and 0.05 mol dm–3 HCl

(iv) 0.1 mol dm–3 CH4COONa and 0.1 mol dm–3 NaOH

Solution:

Option (iii) 0.1 mol dm–3 NH4OH and 0.05 mol dm–3 HCl is the answer.

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