Blood pH is controlled by concentration `H_(2)CO_(3)and HCO_(3)^(-)`of and In presence of `NaHCO_(3)` pH of blood is

Options

A. Increased
B. Decreased
C. No change
D. Statement is wrong

Answer

A

Explanation

In blood `CO_(2) +H_(2)O hArr H_(2)CO_(3(aq))`
`H_(2)CO_(3) +H_(2)O hArr HCO_(3)^(-) +H_(3)O^(+)`
When we add `NaHCO_(3)`
`NaHCO_(3) hArr Na^(+) +HCO_(3)^(-)`
Due to common ion effect `[H_(3)O^(+)]` decreased and then the pH will increase.