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

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