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Question : TheP_(H) of venous blood is only slightly more acidic than the P_(H) of arterial blood because -

Answer»

`CO_(2)` is a weak base.
There is no CARBONIC anhydrase in the venous blood.
The `H^(+)` generated from H2CO3 is BUFFERED by `HCO_(3)^(-)` in venous blood.
The H+ generated from `H_(2)CO_(3)` is buffered by DEOXYHAEMOGLOBIN in venous blood.

Answer :D


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