Write out the chemical equations showing how a buffer solution made from H2PO4- and HPO42- would react to the addition of an acid (H+ ions) or a base (OH- ions).

kindly check the explanation section.

Explanation:

The two ions given in the question above that is Dihydrogenphosphate, H2PO4- and HPO42- are so important when it concerns buffering. During intracellular pH balancing the ions that is H2PO4- and HPO42- reacts with OH⁻ and H⁺ respectively. The equation for the chemical reaction is given below for both ions.

H₂PO₄⁻ + OH⁻  < > HPO₄²⁻ + H₂O.

HPO₄²⁻ + H⁺ <> H₂PO₄⁻.

the answer to this question is 3.

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