# What is solute concentration?

Aug 12, 2018

Well, this is a measure of the amount of solute in a given quantity of solution....

#### Explanation:

And there are several ways of expressing concentration...

$\text{Molarity"="Moles of solute"/"Volume of solution}$

$\text{Molality"="Moles of solute"/"Kilograms of solvent}$

Now at LOW concentrations, generally, $\text{molarity"-="molality}$...at higher concentrations (and different temperatures), the values diverge...

"Percentage by mass"="Mass of solute"/underbrace"Mass of solution"_"mass of solute + mass of solvent"xx100%..

You have to be able to interpret which concentration is quoted, and which is required...

There is also ${\chi}_{\text{the mole fraction"="Moles of solute"/"Total moles in solution}}$