Question

How is the ${\mathrm{CO}}_2$ act as buffer in the blood?

Answer 1

${\mathrm{CO}}_2$ act as a buffer in the blood as:

1. During respiration, ${\mathrm{CO}}_2$ interact with blood to form a by-product where it forms carbonic acid when taken into red blood cells.
2. The formed carbonic acid decomposes to give bicarbonate and hydrogen ions

Therefore, ${\mathrm{CO}}_2$ act as buffer in the blood.