A substance has a hydrogen ion concentration of $\left[ \mathrm { H } ^ {+ } \right] = 4.0 \times 10 ^ { - 3 }$ M. Find the pH of the substance
A)pH $\approx 7.4$
B)pH $\approx 5.4$
C) pH $\approx 3.4$
D)pH $\approx 4.4$
E)pH $\approx 2.4$

Question

Quizplus · Accepted Answer

The pH is calculated using the formula $ \text{pH} = -\log_{10}[\text{H}^+] $. For $[\text{H}^+] = 4.0 \times 10^{-3}$, the pH is approximately 2.4.

A Substance Has a Hydrogen Ion Concentration Of [H+]=4.0×10−3\left[ \mathrm { H } ^ {+ } \right] = 4.0 \times 10 ^ { - 3 }[H+]=4.0×10−3

A Substance Has a Hydrogen Ion Concentration Of $\left[ \mathrm { H } ^ {+ } \right] = 4.0 \times 10 ^ { - 3 }$