# Review - PowerPoint PPT Presentation

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Review

## Review

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##### Presentation Transcript

1. Review Solution

2. True or false

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

4. 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, C6H12O6, is needed to prepare 275 mL of a 1.5M glucose solution? 74.3 g

5. 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

6. Dilutions 9. How many mL of a 4.00M KI solution are needed to prepare 250.0mL of a 0.760 M KI solution? 47.5 mL 10. How many mL of a 2.00M NaCl solution must be diluted with water to prepare 100.0 mL of a 0.400 M NaCl solution? 20.0 mL

7. Molality 11. How many grams of KI must be dissolved in 500.0g of water to produce a 0.060 m KI solution? 5.0g KI 12.Calculate the molality of a solution prepared by dissolving 10.0g NaCl in 600g of water. 0.285 mNaCl

8. Mole fraction 11. What are the mole fractions of glucose in water if a solution is made with 7.59 g glucose, C6H12O6 , dissolved in 125 g water? Xglucose= 0.00605 Xwater = 0.994