Question

ii.Potassium hydroxide (KOH) is used in the manufacture of shaving creams, paints and varnish. An analyst makes up

a solution by dissolving 5.6g of KOH in one dm3 of solution.Calculate the molarity of this solution.​

Answer 1

Explanation:

1 dm3 is the same thing as 1 L. 5.6 gm of KOH is 0.1 mole of KOH (5.6 g/56 g/mole). So, the solution concentration is 0.1 mol KOH / L or 0.1 molar. KOH has only one OH- per KOH so normality and molarity are equivalent. Therefore, this is a 01 N solution of KOH.