Chapter 13, Problem 17PS

You make a saturated solution of NaCl at 25 °C. No solid is present in the beaker holding the solution. What can be done to increase the amount of dissolved NaCl in this solution? (See Figure 13.11.)

1. (a) Add more solid NaCl.
2. (b) Raise the temperature of the solution.
3. (c) Raise the temperature of the solution, and add some NaCl.
4. (d) Lower the temperature of the solution, and add some NaCl.

Figure 13.11 The temperature dependence of the solubility of some ionic compounds in wafer. The solubility of most ionic compounds increases with increasing temperature This is illustrated using NH₄CI (ports b and c).