A substance has a hydrogen ion concentration of $\left[ \mathrm { H } ^ { \cdot } \right] = 3.7 \times 10 ^ { - 6 }$ M. Find the pH of the substance.
A) $2.1$
B) $4.6$
C) $5.4$
D) $7.6$
E) $9.4$ ?

Question

A substance has a hydrogen ion concentration of $\left[ \mathrm { H } ^ { \cdot } \right] = 3.7 \times 10 ^ { - 6 }$ M. Find the pH of the substance. 
A) $2.1$ 
B) $4.6$ 
C) $5.4$ 
D) $7.6$ 
E) $9.4$ ?

Quizplus · Accepted Answer

The pH is calculated using the formula $ \text{pH} = -\log_{10} [\text{H}^+] $. For $[ \text{H}^+ ] = 3.7 \times 10^{-6}$, the pH is approximately 5.4.

A Substance Has a Hydrogen Ion Concentration Of [H⋅]=3.7×10−6\left[ \mathrm { H } ^ { \cdot } \right] = 3.7 \times 10 ^ { - 6 }[H⋅]=3.7×10−6

A Substance Has a Hydrogen Ion Concentration Of $\left[ \mathrm { H } ^ { \cdot } \right] = 3.7 \times 10 ^ { - 6 }$