Solution, Solute and Solvent Problem 7

Chemistry Level 1

At $20^\circ\text{C}$ , a $200\text{ g}$ saturated $\ce{NaCl}$ solution is heated until $40\text{ g}$ of water is evaporated. Then, the solution is cooled down back to $20^\circ\text{C}$ . What is the mass of $\ce{NaCl}$ that is separated out from the solvent in grams?

Details and Assumptions:

The solubility of $\ce{NaCl}$ at $20^\circ\text{C}$ is $36\text{ g}/100\text{ g}$ water

Solution, Solute and Solvent Problem 7

You may refer to Chemistry - Solution, Solute and Solvent Note.