The PH of a Solution Is Given by the Formula $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right] , \text {where } \left[ \mathrm { H } ^ { + } \right]$

question 139

Multiple Choice

The pH of a solution is given by the formula $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right] , \text {where } \left[ \mathrm { H } ^ { + } \right]$ is the concentration of hydrogen ions in moles
per liter in the solution. Use this formula to
-Find the pH value of a sample of lake for which [ $\left[ \mathrm { H } ^ { + } \right] = 0.00000000305$ Round to the nearest tenth.

• A) 7.3
• B) 8.5
• C) 10.1
• D) 6.4

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