Chem-Solutions and Solubility Test Test April 2022

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SCH3U SOLUTIONS And SOLUBILITY TEST 51 marks April 8, 2022

PART A- multiple choice(20)

1. What property allows a compound to be classified as an Arrhenius acid?
A. the production of water in a chemical reaction
B. the release of hydrogen ions in a water
solution
C. the release of hydroxide ions in a water solution
D. . the neutralization of a base _B

2. Stomach fluid has a lower pH than milk. What does this statement tell us about these two
Liquids?
A. Stomach fluid is more acidic than milk
B. Both milk and stomach fluid are bases
C. Milk is more acidic than stomach fluid
D. Both milk and stomach fluid are acids A



3. Steel is composed of carbon and other elements dissolved in iron. Steel can be classified
as A alloy. B. mixture. C. solution. D.
All of the above A

4 A saturated solution is made by dissolving 36.8 g of a solid in 200 mL of water. A
second solution is made by dissolving 19.1 g of the same solid in 100 mL of water. How
would this solution be classified?
A . unsaturated
B. saturated
C. supersaturated
D. . hypersaturated B

5. What is the main effect of thermal pollution to the oxygen solubility in water bodies?
A. They increase the solubility of oxygen in water bodies
B. They maintain the solubility of oxygen in water bodies
C . They don’t cause any affect in solubility of oxygen to the water bodies
D. They reduce the solubility of oxygen in water bodies _D




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6. Which of the following statements concerning factors that affect solute solubility is
incorrect?
A) Most solid solutes become more soluble in water with increasing
temperature. B Most solid solutes become less soluble in water with decreasing
pressure.
C Gaseous solutes become less soluble in water with increasing temperature.
D Gaseous solutes become more soluble in water with increasing pressure. B

7 . To make up a solution with a specific volume, chemist use a piece of special glassware
called ?
a) a beaker
b) a pipette
c) a volumetric flask
d) a burette

C

8. Which diagram represents a dilute strong acid?




III




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9. A solution is saturated at 25 0 C . It is then slowly cooled to 200 C with no change to the
appearance of the liquid. What term would be associated with this solution?
A. super saturated
B. saturated
C. unsaturated
D . oversaturated A

10. Why do molecular solids dissolve in water?
A. Dipole-dipole interactions cause the dissolving
B. Molecular compounds can be broken into ions in solution
C.. Water is a fast moving molecule that can chip off small pieces of molecular solids
D. Most molecular compounds already contain some water _A




11. Suppose that you have two clear, 1.0 mol/L solutions.
You know that each solution could be a strong acid, a weak acid, a strong base , or a weak
base. Which material(s) must you use to identify the solutions correctly?
A. only litmus paper
B. litmus paper and phenolphthalein
C. litmus paper and conductivity tester
D. only a conductivity tester
E. only phenolphthalein B



12. . Which of the following is the correct dissociation reaction for calcium hydroxide?

A. CaOH(s) ---------- Ca+ (aq) + OH–(aq)
B. Ca(OH)2(s) -------- 2Ca2+(aq) + OH– (aq)
C. Ca(OH)3(s) ------- Ca3+(aq) + 3OH– (aq)

D. Ca(OH)2(s) ------- Ca2+(aq) + 2OH– (aq) D is answer




13. Which of the following is a complete list of the spectators ions in the
reaction represented below?

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