1. CH. 15/16 clicker review
solutions

2. What statement best describes the solution HCl(aq)
A. HCl is a solvent and water is a solute
B. HCl is a solute and water is a solvent
C. HCl(aq) is a solvent in a a heterogeneous mixture
D. Water is a solute in a heterogeneous mixture

3. Which solution is the least concentrated?
A. 2 moles of solute dissolved in 3 liters of solution
B. 3 moles of solute dissolved in 2 liters of solution
C. 1 mole of solute dissolved in 1 liter of solution
D. 6 moles of solute dissolved in 5 liters of solution

4. Which solution is the most concentrated?
A. 2 moles of solute dissolved in 5 liters of solution
B. 3 moles of solute dissolved in 1 liters of solution
C. 1 mole of solute dissolved in .2 liter of solution
D. 6 moles of solute dissolved in 4 liters of solution

5. How many grams of sodium nitrate will dissolve in 100g of water at a temperature of 45˚C?
A. 70 g
B. 24 g
C. 45 g
D. 110 g

6. Given equal amounts of NaCl and CaCl2 dissolved in pure water, which would lower the freezing point more?
A. NaCl
B. CaCl2
C. they would lower the freezing point the same amount
D. neither would lower the freezing point because they are both ionic

7. Changing the temperature of a solution
A. directly affects the energy of the particles and collisions
B. inversely affects the energy of the particles and collisions
C. directly affects the energy of the particles and inversely affects the energy of the collisions.
D. inversely affects the energy of the particles and directly affects the energy of the collisions.

8. How many grams of sulfur dioxide will dissolve in 100g of water at a temperature of 45˚C?
A. 10 g
B. 20 g
C. 5 g
D. 25 g

9. In a solution, the substance that something is dissolved in is called the_____?
B. solvent
C. compound
D. colloid

10. Concentration is expressed as_____?
A. molarity (M)
B. kilograms/L (D)
C. Liters/gram (J)
D. specific heat (C)

11. If 25 grams of ammonium chloride is mixed into in 100g of water at a temperature of 45˚C, how would you describe the solution?
A. saturated
B. unsaturated
C. supersaturated
D. colloidal

12. Freezing point depression and boiling point elevation are _____?
A. direct properties
B. tyndall properties
C. colligative properties
D. molarity properties

13. Scattering of light by suspensions and colloids is called the_____?
A. molarity equation
B. tyndall effect
C. vapor pressure lowering
D. Brownian motion

14. If 65 grams of potassium chloride is dissolved in 100g of water at a temperature of 90˚C, how would you describe the solution?
A. saturated
B. unsaturated
C. supersaturated
D. colloidal

15. If 15 grams of sulfur dioxide is dissolved in 100g of water at a temperature of 20˚C, how would you describe the solution?
A. saturated
B. unsaturated
C. supersaturated
D. colloidal

16. What would not affect the freezing point of a bowl of water?
A. changing the pressure above the liquid in the bowl
B. adding salt to the liquid in the bowl
C. adding sugar to the liquid in the bowl
D. adding more water to the bowl

17. In a solution, the substance being dissolved is the_____?
B. solvent
C. solute
D. colloid

18. If 70 grams of ammonia gas is dissolved in 100g of water at a temperature of 10˚C, how would you describe the solution?
A. saturated
B. unsaturated
C. supersaturated
D. colloidal

19. How does concentration (M) affect boiling point and freezing point?
A. Higher concentrations change the bp and fp more
B. Lower concentrations change the bp and fp more
C. Concentration does not affect bp and fp
D. Only high concentrations change the bp and fp

20. If a saturated solution of sodium nitrate at 55˚C is decreased to 12˚C, how much would precipitate out of solution?
A. 0 g
B. 60 g
C. 120 g
D. 40 g

21. Which of the following is not a solution
A. an alloy of copper and zinc (brass).
B. liquid sulfur
C. salt water
D. hydrochloric acid

22. If a solution of sodium nitrate at 55˚C has 43 g of solute dissolved in solution, how much additional sodium nitrate could be dissolved?
A. 0 g
B. 77 g
C. 120 g
D. 32 g

23. The addition of a solute to a liquid pure substance
A. raises the freezing point and lowers the boiling point
B. lowers the freezing point and raises the boiling point
C. lowers the freezing point and lowers the boiling point
D. raises the freezing point and raises the boiling point

24. Why does the addition of a solute to pure water raise the boiling point and lower the freezing point?
A. There are more particles in the water
B. There are less ionic particles in the water
C. The hydrogen bonds are broken by the solute
D. The solute is polar

25. How is vapor pressure affected by adding a solute to a pure solvent?
A. vapor pressure is raised
B. vapor pressure is not changed
C. vapor pressure is lowered
D. vapor pressure is only affected by ionic solutes

26. Which substance is least soluble at 10 degrees Celsius?
A. SO2
B. KClO3
C. KNO3
D. KI

27. Concentration (Molarity) is expressed as
A. moles of solute dissolved in Liters of solution.
B. moles of solution dissolved in Liters of solvent
C. the amount of space between the particles in nanometers
D. the amount of precipitate formed from a solution

28. Which substance is most soluble at 20 degrees Celsius?
A. SO2
B. NH3
C. KNO3
D. KI

29. Know Molarity, and Dilution equations and how to solve for any variable.