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Understanding Solutions Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. A lab technician has 2 mol of X in an Erlenmeyer flask and pours in 1 liter of water in order to make a 2 M solution. Why is the solution not exactly 2 M?

Question 2 2. Which of the following is NOT true regarding solubility curves?

Question 3 3. What is the equation used to determine the mass percent of a solute in a solution?

Question 4 4. What is a solution?

Question 5 5. What does a solubility curve show?

Page 2

Question 6 6. Because ethanol dissolves in water, it is:

Question 7 7. Why does a spoonful of sugar dissolve faster than a sugar cube?

Question 8 8. What does the solubility of an ionic compound depend on?

Question 9 9. How is solubility determined?

Question 10 10. How is a supersaturated solution made?

Page 3

Question 11 11. Which of these properties, is NOT a colligative one?

Question 12 12. State the Raoult's Law?

Question 13 13. How many grams of CH3 OH is needed to make a 0.244 M solution in 400 mL of water?

Question 14 14. What do you need to know about a stock solution in order to calculate a dilution?

Question 15 15. Why does an open soda go flat?

Page 4

Question 16 16. What is the molarity of a solution made by dissolving 26.42 g of (NH4) 2 SO4 in enough water to make 50 mL of solution?

Question 17 17. What volume would you need to dilute 0.2 L of a 15 M solution to obtain a 3 M solution?

Question 18 18. What is the dilution of solutions equation?

Question 19 19. What is molarity?

Question 20 20. Which of the following does NOT affect the rate of dissolution of a solute?

Page 5

Question 21 21. Which of the following statements best describes a supersaturated solution?

Question 22 22. How much of a 16 M stock solution must you add to make 4 L of a 1 M diluted solution?

Question 23 23. Which of the following is true?

Question 24 24. What is the equation used for determining molarity?

Question 25 25. What is the osmotic pressure formula?

Page 6

Question 26 26. When is molality usually used?

Question 27 27. What is an electrolyte?

Question 28 28. What is osmotic pressure?

Question 29 29. If I used 0.3 L of a stock solution to make 5 L of a 2 M diluted solution, what was the original molarity of the stock solution?

Question 30 30. What happens to vapor pressure when you add a solute to a solution?

Understanding Solutions Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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