How are acids and bases in the body control blood pH?
If you want to keep the body in alkaline condition if the ph is acid thn you hav to add a base like NaOH up-to the alkaline pH you needs for eg., 8pH Similarly If you want to keep the body in acidic range if it is in alkaline then you have to add acid like HCl up-to which you need eg., 4pH Neutral pH also be attained when limited quantity of acid or base according to your requirement.