Question

What is the pH of a solution with a [H3O+] concentration of 1.5 X 10 -13 M?

Answer 1

Answer on Question #50372, Chemistry, Other

What is the pH of a solution with a $\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]$ concentration of $1.5 \times 10^{-13} \mathrm{M}$?

Solution:

$$\begin{array}{l} \left[ \mathrm{H}^{+} \right] = \left[ \mathrm{H}_{3} \mathrm{O}^{+} \right] = 1.5 \times 10^{-13} \\ pH = - \log_{10} \left[ H^{+} \right] \\ pH = - \log_{10} 1.5 \times 10^{-13} = 12.82 \\ \end{array}$$

Answer:

$$\mathrm{pH} = 12.82$$

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