Acids & Bases Chemistry Math Question 4

Question

A solution is made by adding 0.35 mol of lithium hydroxide (LiOH) in enough water to form 3 L of solution. Calculate the pH.

Answer 1

Molarity of LiOH:

0.35 moles/3 L = 0.1167 M

Find pOH:

pOH = -log [OH-] = -log 0.1167

pOH = 0.933

Find pH:

pH + pOH = 14

pH = 14 - pOH

pH = 14 - 0.933

pH = 13.1