Solve
-Find the Hydrogen Ion Concentration of a Solution Whose $\mathrm { pH }$

Multiple Choice

Solve.
-Find the hydrogen ion concentration of a solution whose $\mathrm { pH }$ is $6.8$ . Use the formula $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right]$ .

A) $1.58 \times 10 ^ { - 7 }$
B) $6.31 \times 106$
C) $- 0.8325089$
D) $0.83250891$