MCQ
Fear or excitement generally causes one to breathe rapidly and it results in the decrease of concentration of CO2 in blood. In what way, it will change the pH of blood?
- ApH will increase
- BpH will decrease
- CNo change
- DpH will be 7
✓
Answer
- No change
Explanation:
As we know, CO2 is acidic in nature. So, a decrease in its concentration should increase the pH. But, blood contains serum which has proteins in it. This acts as a buffer solution. We already know that buffer solutions resist a change in the pH even on addition of a small amount of acid or small amount of base or dilution, etc.
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