Name: ______________________
Class: _________________
Date: _________
Ch11 Solubility Assignment
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. Which of the following usually makes a substance dissolve faster in a solvent?
a. agitating the solution
b. increasing the particle size of the solute
c. lowering the temperature
d. decreasing the number of particles
____
2. Which of the following pairs of factors affects the solubility of a particular substance?
a. temperature and the nature of solute and solvent
b. temperature and degree of mixing
c. particle size and degree of mixing
d. particle size and temperature
____
3. Which of the following substances is less soluble in hot water than in cold water?
a. CO 2
c. NaNO 3
b.
NaCl
d.
KBr
____
4. Which of the following occurs for solid solutes as temperature increases?
a. Solubility decreases.
c. Solubility remains the same.
b. Solubility increases.
d. Molarity doubles.
____
5. In a concentrated solution there is ____.
a. no solvent
b. a large amount of solute
c.
d.
a small amount of solute
no solute
____
6. What is the molarity of a solution that contains 6 moles of solute in 2 liters of solution?
a. 6M
c. 7M
b. 12M
d. 3M
____
7. In which of the following is the solution concentration expressed in terms of molarity?
10 g of solute
10 mL of solute
a.
c.
1000 gof solution
1 L of solution
10 g of solute
10 mol of solute
b.
d.
1000 mL of solution
1 L of solution
____
8. Which of the following operations yields the number of moles of solute?
a. molarity × moles of solution
c. molarity × mass of solution
b. molarity × liters of solution
d. moles of solution ÷ volume of solution
____
9. What is the molarity of a solution containing 7.0 moles of solute in 569 mL of solution?
a. 81M
c. 12M
b. 0.081M
d. 4.0M
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ID: A
Name: ______________________
ID: A
____ 10. What is the number of moles of solute in 250 mL of a 0.4M solution?
a. 0.1 mol
c. 0.62 mol
b. 0.16 mol
d. 1.6 mol
____ 11. What is the molarity of a solution containing 56 grams of solute in 959 mL of solution? (molar mass of
solute = 26 g/mol)
a. 1.5M
c. 2.1M
b. 2.2M
d. 0.0022M
____ 12. What volume of 5.00x10-2 mol/L Ca(NO3)2 solution will contain 2.50x10-2 mol of nitrate ions?
a. 200mL
c. 500mL
b. 250mL
d. 750mL
____ 13. You have 75.0 mL of 2.50 M Na2CO3 and 25.0 mL of 1.50M NaCl. What is the resulting Na+
concentration when the two solutions are mixed?
a. 4.12 M
c. 2.25 M
b. 40.0 M
d. 0.833 M
____ 14. What is the shape of the water molecule?
a. linear
b. tetrahedral
c.
d.
trigonal planar
bent
____ 15. Which atom in a water molecule has the greatest electronegativity?
a. one of the hydrogen atoms
b. both hydrogen atoms
c. the oxygen atom
d. There is no difference in the electronegativities of the atoms in a water molecule.
____ 16. The bonds between adjacent water molecules are called ____.
a. hydrogen bonds
c. nonpolar covalent bonds
b. ionic bonds
d. polar covalent bonds
____ 17. Which of the following substances is the most soluble in water?
a. sodium chloride
c. bromine
b. methane
d. carbon
Record your answers here:
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