1. a) Solubility is the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature and pressure, forming a saturated solution.
b) The student should stir the sodium chloride into the water until no more dissolves, even with continued stirring. At this point, the solution is saturated. If undissolved solid remains at the bottom of the beaker after stirring, it indicates the solution has reached its saturation point for that temperature.
2. a) Plot the points (0, 32.5), (10, 33.8), (20, 35.5), (30, 37.5), (40, 39.5) on the graph and draw a smooth curve or straight line connecting them.
b) Using the graph, locate 25°C on the x-axis, move vertically to the plotted line, then horizontally to the y-axis. The solubility at 25°C is approximately 36.5 g per 100 g of water.
Parent Tip: Review the logic above to help your child master the concept of pearson chemistry worksheet answers.
