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Which pair of solutes could be used to prepare an aqueous buffer solution with a pH < 7?

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Which pair of solutes could be used to prepare an aqueous buffer solution with a pH < 7?

Post  JasonGHerbalExt on Thu Jan 22, 2015 2:05 am

Which pair of solutes could be used to prepare an aqueous buffer solution with a pH < 7?

(A) HCl – NH4Cl (B) HF – NaF
(C) NH3 – NH4Cl (D) NaOH – NaCl

JasonGHerbalExt

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