Explain hydrogen phosphate buffer

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Reference no: EM13126328

Hydrogen phosphate buffer
Buffer solutions have the unique ability to resist changes in PH when an acid or base is added to them. One important buffer system that helps to maintain blood pH at a constant value of 7.4 is the hydrogen phosphate buffer. The chemical equation for this for this buffer system is: H2PO4 (negative) (aq) + H2O (l) <>H3O (positive) (aq) + HPO4 (negative 2).

Use Le Chatelier's Principle to explain why the pH of a hydrogen phosphate buffer system remains constant when:

(a) Small amounts of acid are added
(b) Small amounts of base are added

Reference no: EM13126328

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