Question

Calculate the pH of a solution if the concentration of hydroxide ions (OH-) is 3.6 x 10-11M?

Answer 1

Answer:

3.56

Explanation:

pH refers to a measure of hydrogen ion concentration. It measures acidity or alkalinity of a solution. It usually ranges from 0 to 14.

If pH of aqueous solutions at 25°C is less than 7 then they are acidic, while  aqueous solutions with a pH greater than 7 are alkaline.

Concentration of hydroxide ions = $3.6\times 10^{-11}$

pH = $-log \left ( 3.6\times 10^{-11} \right )=10.44$

pOH = 14 - pH = 14 - 10.44 = 3.56