The Chemical Acidity of a Solution Is Measured in Units $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right]$

question 129

Multiple Choice

The chemical acidity of a solution is measured in units of pH: $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right]$ , where $\left[ \mathrm { H } ^ { + } \right]$ is the hydrogen ion concentration in the solution.What is $\left[ \mathrm { H } ^ { + } \right]$ if the $\mathrm { pH } = 6.8$ ?

• A) \(1.58 \times 10 ^ { - 7 }\)
• B) \(6.31 \times 10 ^ { - 7 }\)
• C) \(6.31 \times 10 ^ { - 6 }\)
• D) \(1.58 \times 10 ^ { - 6 }\)
• E)6.800

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