What is the pH value of human blood under normal conditions?
7.4
pH measures how acidic or basic a solution is on a scale of 0 to 14, where 7 is neutral.
Human blood is slightly alkaline, and its pH is normally kept within a narrow range of about 7.35 to 7.45 by buffer systems such as bicarbonate.
The average value is taken as 7.4; a fall below this range causes acidosis and a rise causes alkalosis.
Hence, 7.4.
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