1.

The principal buffer present in human blood

Answer»

`NaH_(2)PO_(4) + Na_(2)HPO_(4)`
`H_(3)PO_(4) + NaH_(2)PO_(4)`
`CH_(3)COOH + CH_(3)COONa`
`H_(2)CO_(3) + HCO_(3)^(-)`

Solution :`H_(2)CO_(3) + HCO_(3)^(-)` buffer is present in human BLOOD, which maintain PH of blood.


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