Choose the one alternative that best completes the statement or answers the question.
-$\mathrm { pH } = - \log _ { 10 } \left[ \mathrm { H } ^ { + } \right]$Find the $\left[ \mathrm { H } ^ { + } \right]$if the $\mathrm { pH } = 1.4$.
A) $2.51 \times 10 ^ { - 1 }$
B) $3.98 \times 10 ^ { - 1 }$
C) $3.98 \times 10 ^ { - 2 }$
D) $2.51 \times 10 ^ { - 2 }$

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The Answer of Choose the one alternative that best completes the statement or answers the question.
-$\mathrm { pH } = - \log _ { 10 } \left[ \mathrm { H } ^ { + } \right]$Find the $\left[ \mathrm { H } ^ { + } \right]$if the $\mathrm { pH } = 1.4$.
A) $2.51 \times 10 ^ { - 1 }$
B) $3.98 \times 10 ^ { - 1 }$
C) $3.98 \times 10 ^ { - 2 }$
D) $2.51 \times 10 ^ { - 2 }$

Choose the One Alternative That Best Completes the Statement or Answers