Solution. True or false 1. Whipping cream is an example of a solution. False, it is a colloid 2. Solutions show the tyndall effect. False, colloids do.

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Presentation transcript:

Solution

True or false

1. Whipping cream is an example of a solution. False, it is a colloid 2. Solutions show the tyndall effect. False, colloids do. 3. Suspensions settle out with time. True. 4. Electrolytes can carry an electric current. True.

Molarity 5. A solution has a volume of 250. mL and contains 0.70 mol of NaCl. What is the molarity of the solution? 2.8 M 6. How many grams of glucose, C 6 H 12 O 6, is needed to prepare 275 mL of a 1.5M glucose solution? 74.3 g

Percent Solutions 7. If 10. mL of acetone is diluted with water to a total solution volume of 200. mL, what is the percent volume (v/v) of acetone in the solution? 5.0% 8. How many grams of NaCl would you need to prepare 1500g of a 5.0% NaCl (m/m) solution? 75g

Dilutions 9. How many mL of a 4.00M KI solution are needed to prepare 250.0mL of a M KI solution? 47.5 mL 10. How many mL of a 2.00M NaCl solution must be diluted with water to prepare mL of a M NaCl solution? 20.0 mL

Molality 11. How many grams of KI must be dissolved in 500.0g of water to produce a m KI solution? 5.0g KI 12.Calculate the molality of a solution prepared by dissolving 10.0g NaCl in 600g of water m NaCl

Mole fraction 11. What are the mole fractions of glucose in water if a solution is made with 7.59 g glucose, C 6 H 12 O 6, dissolved in 125 g water? X glucose = X water = 0.994