Solve the Problem $\mathrm { pH }$ Of a Chemical Solution Is Given by the Formula

Multiple Choice

Solve the problem.
-The $\mathrm { pH }$ of a chemical solution is given by the formula
$$\mathrm { pH } = - \log _ { 10 } \left[ \mathrm { H } ^ { + } \right]$$
where $\left[ \mathrm { H } ^ { + } \right]$ is the concentration of hydrogen ions in moles per liter.
Find the $\mathrm { pH }$ if the $\left[ \mathrm { H } ^ { + } \right] = 8.4 \times 10 ^ { - 1 }$ .

A) $0.08$
B) $1.92$
C) $0.92$
D) $1.08$