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An acid buffer can be prepared by mixing solutions of : A) NaOH and HCl B) H2SO4 and Na2SO4 C) CH3COONa and CH3COOH D) NH4Cl

An acid buffer can be prepared by mixing solutions of :
A) NaOH and HCl
B) H2SO4 and Na2SO4
C) CH3COONa and CH3COOH
D) NH4Cl and NH4OH

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