One of the buffers that contributes to pH stability in human blood is carbonic acid (H₂CO₃) .Carbonic acid is a weak acid that,when placed in an aqueous solution,dissociates into a bicarbonate ion (HCO₃^-⁾and a hydrogen ion (H⁺) .Thus,
H₂CO₃ ↔ HCO₃^- + H⁺
If the pH of the blood increases,one would expect

Question

Quizplus · Accepted Answer

When the pH of the blood increases (i.e. becomes more basic), there will be a shift towards the left in the equation, as the reaction tries to counteract the increase in pH. This means that there will be a decrease in the concentration of hydrogen ions (H+) and thus a decrease in the concentration of carbonic acid (H2CO3). As carbonic acid dissociates, the concentration of bicarbonate ions (HCO3-) will increase. Therefore, choice A is correct.

One of the Buffers That Contributes to PH Stability in Human