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Do Now. What would be the new concentration of a 2L, 3 M sample of solution if I add 3L of water to it?. Solubility. How much can be dissolved. Three levels of solubility. Unsaturated- can hold more solute at a given temperature

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Do Now

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  1. Do Now • What would be the new concentration of a 2L, 3 M sample of solution if I add 3L of water to it?

  2. Solubility How much can be dissolved

  3. Three levels of solubility • Unsaturated- can hold more solute at a given temperature • Saturated- Holds as much solute as possible at a given temperature • Supersaturated- Holds more then should be possible at a given temperature usually unstable

  4. sugar

  5. How do we know • Visually

  6. From a solubility curve saturated Super saturated Unsaturated

  7. Determine how much could be dissolved At 40 C in 75 ml At 100 C in 150 ml At 40 C in 100 ml At 40 C in 50 ml

  8. Reading a solubility curve

  9. Determine if each of the following is unsaturated, saturated, or supersaturated. 55g of NH3 at 20oC._________ 80g of NaNO3 at 10oC. ._________ c. 10g of Ce2(SO4)3 at 10oC._________ d. 145g of NaNO3 at 80oC. ._________ e. 125g of KNO3 at 60oC. _________ f. 35g of NaCl at 100oC. ._________ g. 65g of NH4Cl at 80oC. _____________ h. 12g of NH3 at 90oC. ______________

  10. Class work • At 30 degree Celsius how many grams of KCl can be dissolved in 200 mL of water? • What temperature must a Salt solution be at to dissolve 40 g of salt and be saturated? • How many grams of KNO3 can be dissolved at 50 degrees Celsius in 75 mL of water? • In 100 mL of water how many grams of NaNO3 is dissolved in 10 degrees Celsius?

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