What is the concentration (in M)of hydroxide ions in a solution at 25.0 °C with pH = 4.282?

Question

Quizplus · Accepted Answer

Since pH + pOH = 14 at 25.0 °C, we can calculate the pOH:

pOH = 14 - pH = 14 - 4.282 = 9.718

Then, we can calculate the concentration of hydroxide ions using:

[OH-] = 10^(-pOH) = 10^(-9.718) = 1.92 × 10^(-10)

Therefore, the concentration (in M) of hydroxide ions in the solution is 1.92 × 10^(-10) M, which corresponds to choice C.

What Is the Concentration (In M)of Hydroxide Ions in a Solution