1.

Which of the following is not a type of Acidic buffer mixture?

A. Na<sub>2</sub>HPO<sub>4</sub> + Na<sub>3</sub>PO<sub>4</sub>
B. CH<sub>3</sub>COOH+ CH<sub>3</sub>COONa
C. H<sub>2</sub>CO<sub>3</sub>+Na<sub>2</sub>CO<sub>3</sub>
D. H<sub>3</sub>PO<sub>4</sub>+NaH<sub>2</sub>PO<sub>4</sub>
Answer» B. CH<sub>3</sub>COOH+ CH<sub>3</sub>COONa


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