Write the chemical reactions occurring as the hcl and naoh are buffered by these phosphates buffer solution.

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Explanation:

Before delving into the question, let us check some facts about buffer solution.

What is a buffer solution? : A buffer solution is a solution that has resistance towards the change in pH upon the addition of strong base or strong acid. The reaction below shows how buffer solution react with small addition of strong base and Strong acids;

HA + OH^- > A^- + H2O.(1).

In the equation (1) above the conjugate acid react with the base and neutralized it.

A^- + H^+ > HA.(2)...

In the equation (2) above, the conjugate base react with the acid and neutralized it.

Hence, the chemical reaction occuring as NaOH and HCl are buffered by sodium dihydrogen Phosphate and sodium hydrogen Phosphate are there below;

(1). Upon the addition of strong base:

H2PO4^- + OH^- > HPO4^2- +

H2O.

(2). Upon the addition of strong acid:

HPO4^2- + H3O^+ > H2PO4^2- + H2O.

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