Question

The pH value of human blood is about (a) 4.5 to 5.6

Answer 1

ANS IS 7.40 APPROX


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Answer 2

The pH of a substance is the negative logarithm to the base 10 of the hydrogen ion concentration present in a substance.

Ф pH of 7 is considered to be neutral .

Ф pH of more than 7 is alkaline.

Ф pH of less than 7 is acidic.

pH of blood is 7.4 .

Hence it is slightly alkaline.

The alkalinity of blood is present in the plasma which has some alkaline substances.