Question

What is the average normal pH of blood?
1) 8.4
2) 7.8
3) 7.4
4) 4.7

Answer 1

The average normal pH of blood is 7.4. Blood is slightly more basic (alkaline) compared to pure water. Buffers in blood help regulate pH. Therefore, the correct option is 3) 7.4

Step-by-step explanation:

The average normal pH of blood is 7.4.

Blood is slightly more basic (alkaline) on the pH scale compared to pure water, which has a pH of 7.0.

Blood contains buffers that help regulate pH and keep it within a narrow range of 7.35 to 7.45.