You need to prepare a buffer solution of pH 4.178 from 25.0 mL of 0.282 M solution of a sodium salt of a weak acid, NaA where the pKa of the weak acid HA is 4.270. How many moles of 0.329 M HCl do you need to add to achieve this goal?

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MolespHpKaWeak AcidBuffer SolutionNaASodium Salt
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