# What is "volume percent" of a 10*g mass of solute dissolved in a 150*g mass of solvent?

Jul 22, 2017

Are you sure you mean to specify $\text{volume percent}$?

#### Explanation:

Normally we reserve the term for the concentration.......

"Volume of solute"/"Volume of solution"xx100%

And we have no handle on the volume of solute here........as it is commonly used for gas/gas or liquid/liquid solutions.

We could more properly quote concentration in terms of......

"Mass of solute"/"Mass of solute + mass of solvent"xx100%

(10*g)/(10*g+150*g)xx100%=6.25%("m/m").

WE could of course quote concentration in more familiar terms as..

$\text{molarity"="Moles of solute"/"Volume of solution (L)}$.

And since, at these concentrations, volume change on dissolution would be negligible, we write........

$\frac{\frac{10 \cdot g}{101.10 \cdot g \cdot m o {l}^{-} 1}}{150 \cdot g \times 1 \cdot m L \cdot {g}^{-} 1 \cdot {10}^{-} 3 L \cdot m {L}^{-} 1} = 0.659 \cdot m o l \cdot {L}^{-} 1.$