Q.

_______helps to maintain pH of blood between 7.26 to 7.42.

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a

H2CO3 / HCO3–

b

H2SO4/ HSO4–

c

H3O+ / H2O

d

All of these

answer is A.

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Detailed Solution

Weak acid and its salt with strong base acts as Acidic buffer [H2CO3 / NaHCO3]This Buffer solution does not alter the PH of blood hence it helps to maintain PH of blood between 7.26 to 7.42
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