Question

In a solution of hydrochloric acid in water, the concentration of hydrogen ions is 10−2M. What is the pH of the solution?
A. 2.0
B. 2.1
C. 3.0
D. 10.2

Answer 1

Answer:

The hydrogen ion concentration is 1.0 x 10 −3M. The exponent of 10 is -3, which denoted that pH= -(-3) = 3. The solution is acidic.