How many osmoles are in a solution of 1M NaOH?
A) 1 osm
B) 2 osm
C) 3 osm
D) 4 osm

Question

Quizplus · Accepted Answer

NaOH is a strong base and dissociates completely in water to give Na+ and OH- ions. Therefore, 1M NaOH solution contains 1M Na+ ions and 1M OH- ions. The total number of osmoles in the solution is the sum of the number of osmoles contributed by Na+ ions and OH- ions. Each Na+ ion contributes 1 osmole and each OH- ion contributes 1 osmole. Therefore, the total number of osmoles in the solution is 1 + 1 = 2 osm.

How Many Osmoles Are in a Solution of 1M NaOH