Acids & Bases Problem Set

Question 3: Physiological pH

Physiological pH is 7.4. What is the hydrogen ion concentration of a solution at physiological pH?

A.	-7.4 M
B.	0.6 M
C.	0.6 x 10 - 8 M
D.	1 x 10 - 8 M
E.	4 x 10 - 8
	To be exact, 10 raised to the power of -7.4 = 3.98 x 10 - 8.