Use the pH scale to answer the question.
-What is the pH of a solution with a hydrogen ion concentration of 0.001 mole per liter? Is this solution an acid or a base?
A) $\mathrm { pH } = 3$; acid
B) $\mathrm { pH } = 7$; neutral
C) $\mathrm { pH } = 4$; acid
D) $\mathrm { pH } = 8$; base

Question

Use the pH scale to answer the question.
-What is the pH of a solution with a hydrogen ion concentration of 0.001 mole per liter? Is this solution an acid or a base? 
A) $\mathrm { pH } = 3$; acid
B) $\mathrm { pH } = 7$; neutral
C) $\mathrm { pH } = 4$; acid
D) $\mathrm { pH } = 8$; base

Quizplus · Accepted Answer

The pH is calculated using the formula $\mathrm{pH} = -\log[H^+]$, where $[H^+]$ is the hydrogen ion concentration. For a concentration of 0.001 mole per liter, $\mathrm{pH} = -\log(0.001) = 3$. A pH less than 7 indicates an acidic solution.

Use the PH Scale to Answer the Question pH=3\mathrm { pH } = 3pH=3

Use the PH Scale to Answer the Question $\mathrm { pH } = 3$