# What is the concentration of a solution, expressed in g/100 mL, if 25 g of solute dissolved in 40 mL of water?

Jun 12, 2017

$\text{Solubility} \equiv 62.5 \cdot g \cdot 100 \cdot m {L}^{-} 1$.............

#### Explanation:

We want $\text{Concentration"="Mass of solute"/"100 mL volume of solvent}$.

We make the reasonable assumption that the volume of solution is equal to $40 \cdot m L$.

And so we set up the quotient.......

$\frac{25 \cdot g}{\left(\frac{40}{100}\right) \cdot m L} = 62.5 \cdot g \cdot {\left(100 \cdot m L\right)}^{-} 1$..........