What are the molar and molal concentrations of a 9.27⋅g mass of sodium chloride dissolved in 30⋅mL of water?

1 Answer
anor277
Sep 6, 2017

Well, we can work out the molality.

Explanation:

Molality=Moles of soluteKilograms of solvent

=9.27⋅g58.44⋅g⋅mol−130⋅g×10−3⋅g⋅kg−1=5.29⋅mol⋅kg...

On the other hand....

Molarity=Moles of soluteLitres of solution

We expect the molarity to be near as dammit to the molality, even for this concentrated solution.....given that in this instance, volume of solution would be relatively unchanged with respect to the pure solvent.

Related questions
See all questions in Ksp
Impact of this question
1957 views around the world
You can reuse this answer
Creative Commons License