Normal pH of blood is: September 2007: (A) 7.3, (B) 7.2, (C) 7.7, (D) 7.4
Answer is D. Ans. D: 7.40Normal pH is 7.35-7.45.There are a series of buffers which help the plasma resist any change in pH. Some of them include: the hemoglobin in the red blood cells, other plasma proteins, the bicarbonate buffer and the phosphate buffer.