What prediction can we make about the pH of blood as that blood first comes in contact with respiring cells?

Question

Carbon dioxide is readily soluble in water, according to the equation CO2 + H2O --> H2CO3. Carbonic acid is a weak acid. Respiring cells release CO2. What prediction can we make about the pH of blood as that blood first comes in contact with respiring cells?


a) blood pH will decrease slightly
b) blood pH will remain unchanged
c) blood pH will increase slightly
d) blood pH will first decrease, then increase sharply as CO2 combines with hemoglobin
e) blood pH will first increase, then decrease as CO2 combines with hemoglobin

Answer 1

Best Answer - Chosen by Voters

a) blood pH will decrease slightly

CO2 +H2O--> H+ + HCO3-

H+ lower pH (more acidic).