Question

What is the concentration (in M) of hydroxide ions in a solution at 25.0 °C with a pH of 4.282? Option 1: 1.48 x 10^-5 M Option 2: 3.77 x 10^-9 M Option 3: 6.51 x 10^-4 M Option 4: 2.18 x 10^-10 M

Answer 1

-4.282)

Step-by-step explanation:

pH is the negative log of the hydrogen ion concentration.

A pH of 4.282 means that the hydrogen ion concentration is 10^(-4.282) M.

10^(-4.282) = 1.51 x 10^-5

Of the options, the first is correct at 1.48 x 10^-5 M