Solubility Lab.

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Presentation transcript:

Solubility Lab

Question How does changing the temperature of the solvent effect the solubility of the solute in water?

Background questions What effects do solutes have on a solvent’s freezing point and boiling points? Why is the temperature needed to freeze ocean water lower than the temperature needed to freeze the surface of a freshwater lake? What is solubility? How can solubility help you identify a substance? List three factors that affect solubility? When you heat water and add sugar, all of the sugar dissolves. When you cool the solution, some sugar comes out of the solution. Explain.

Answers to Background Questions

Hypothesis

Procedure

Mass of Salt Dissolved (g) Data for Salt Temp. of Water (°C) Mass of Salt Dissolved (g) Volume of Solvent (mL) Solubility (g of solute/ml of solvent) Trial #1 Trial #2 Trial #3 Avg. 25

Data for Sugar

Graph—Temperature vs. Solubility for salt and sugar

Conclusion