Solve the problem.
-The $\mathrm { pH }$ of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by $\mathrm { pH } = - \log \mathrm { x }$ where $\mathrm { x }$ represents the concentration of the hydrogen ions in the solution in moles per liter. Find the $\mathrm { pH }$ if the hydrogen ion concentration is $1 \times 10 ^ { - 3 }$.
A) 3
B) 11
C) $- 3$
D) $- 11$

Question

Quizplus · Accepted Answer

$$\mathrm{pH} = - \log (\mathrm{H^+}) = - \log (1 \times 10^{-3}) = - (-3) = 3$$
Therefore, the pH of the solution with a hydrogen ion concentration of $1 \times 10^{-3}$ is 3, which is less than 7 and falls in the acidic range. Hence, the answer is choice A.

Solve the Problem pH\mathrm { pH }pH Of a Solution Ranges from 0 to 14

Solve the Problem $\mathrm { pH }$ Of a Solution Ranges from 0 to 14