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Solubility Notes

Solubility Notes. SPS6. Students will investigate the properties of solutions. a. Describe solutions in terms of solute/solvent conductivity concentration b. Observe factors affecting the rate a solute dissolves in a specific solvent.

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Solubility Notes

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  1. Solubility Notes

  2. SPS6. Students will investigate the properties of solutions. a. Describe solutions in terms of solute/solvent conductivity concentration b. Observe factors affecting the rate a solute dissolves in a specific solvent. c. Demonstrate that solubility is related to temperature by constructing a solubility curve. Solutions

  3. Solution • A mixture that is homogeneous on the molecular level. Example • Salt water • Gold jewelry • Cola

  4. Solubility Rate

  5. Solute • The part that is dissolved in the solvent and is normally the smallest part of the solution. Example • Salt in salt water

  6. Solvent • The part of the solution that does the dissolving, normally the largest part of a solution. Example • Water in salt water

  7. Conductivity • The ability of a solution to conduct electricity. A solution with a ionic solute will conduct. Examples • Salt water will conduct because it separates into ions. • Ethanol dissolved in water will not conduct

  8. Concentration • A measure of how much solute is dissolved in the solvent. Example • How many grams of a solute is dissolved in 100 grams of water.

  9. Saturated • A solution in which the maximum amount of solute has been dissolved. If more solute is added, it will sit as crystals on the bottom of the container. Example • Carbonated water • Sugar Kool-aid

  10. Unsaturated • A solution can have solute added and dissolved because the solute concentration is lower than its equilibrium. Example • Kool-aid that is not sweet • Tea that is not sweet enough

  11. Supersaturated • A solution that contains more solute than could be dissolved by the solvent under normal circumstances. Example • Kool-Aid with sugar at the bottom • This is how rock candy is made

  12. Solutions Review

  13. Solubility Curve

  14. Solubility Curve • What is the solubility of NaNO3 at 10⁰C and 22⁰C? • What happens to the solubility as the temperature increases? • What affect does the temperature have on the solubility of most solutes?

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