Answer to Question #303438 in Physical Chemistry for Chemistry

Question

The system Carbonic acid and sodium hydrogen carbonate is found in blood and helps in maintaining the pH of blood close to 7.4.

Case I- Any excess of H+ entering blood is removed by HCO3- ion, Case II - Any excess of OH- entering blood is removed by H2CO3. Write the reactions for the above two cases.

Answer 1

Case I ;

HCO3- + H+ = H2CO3

Case II;

H2CO3 = HCO3- + H+