Chemistry 10th Edition International Edition By Kenneth – Test Bank

Chapter 11—Reactions in Aqueous Solutions II: Calculations

MULTIPLE CHOICE

1. What volume of 12.6 M HCl must be added to enough water to prepare 5.00 liters of 3.00 M HCl?
a. 1.19 L
b. 21.0 L
c. 0.840 L
d. 7.56 L
e. 2.14 L

ANS: A
OBJ: Calculate the molarity of a dilution given molarity of the concentrated stock and the final volume and molarity of the dilute solution.
TOP: Calculations Involving Molarity

2. What volume of 12.0 M HNO3 is required to prepare 900. mL of 2.0 M HNO3 solution?
a. 100. mL
b. 150. mL
c. 200. mL
d. 250. mL
e. 300. mL

ANS: B
OBJ: Calculate the molarity of a dilution given molarity of the concentrated stock and the final volume and molarity of the dilute solution.
TOP: Calculations Involving Molarity

3. What mass of Ca(OH)2 is present in 500. mL of 0.00500 molar Ca(OH)2?
a. 0.185 g
b. 0.282 g
c. 0.370 g
d. 0.416 g
e. 0.615 g

ANS: A
OBJ: Calculate grams solute given solution volume and molarity.
TOP: Calculations Involving Molarity

4. How many grams of glucose, C6H12O6, are needed to make 5.00 L of 5.00 M solution?
a. 0.139 g
b. 4500. g
c. 600. g
d. 180 g
e. 7.2 g

ANS: B
OBJ: Calculate grams solute given solution volume and molarity.
TOP: Calculations Involving Molarity

5. What is the molarity of 1600. mL of a solution that contains 3.25 g of H3PO4?
a. 2.03  103 M
b. 6.90  103 M
c. 6.22  102 M
d. 6.09  103 M
e. 2.07  102 M

ANS: E
OBJ: Calculate solution molarity given solution volume and grams solute.
TOP: Calculations Involving Molarity

6. What is the molarity of glucose solution if 437 g of glucose, C6H12O6, are dissolved in 2000 mL of solution?
a. 0.206 M
b. 0.824 M
c. 1.21 M
d. 1.21  103 M
e. 2.42 M

ANS: C
OBJ: Calculate solution molarity given solution volume and grams solute.
TOP: Calculations Involving Molarity

7. If 75.0 mL of 0.250 M HNO3 and 75.0 mL of 0.250 M KOH are mixed, what is the molarity of the salt in the resulting solution?
a. 0.250 M
b. 0.500 M
c. 0.333 M
d. 0.125 M
e. 0.167 M

ANS: D
OBJ: Determine the molarity of the product made by mixing two known volumes of reactants of equal solute concentration.
TOP: Calculations Involving Molarity

8. If 35 mL of 1.0 M H2SO4 is mixed with 35 mL of 2.0 M NaOH, how many moles of H2SO4 remain after completion of the reaction?
a. 0.070
b. 0.035
c. 0.0175
d. 0.0525
e. zero

ANS: E
OBJ: Identify the moles of excess reactant given the volume and molarity of each reactant.
TOP: Calculations Involving Molarity

9. What is the molarity of the NaBr produced when 50.0 mL of 4.80 M NaOH is mixed with 150.0 mL of 1.60 M HBr?
a. 2.40 M
b. 3.20 M
c. 1.20 M
d. 1.33 M
e. 480 M

ANS: C
OBJ: Determine the molarity of the product made by mixing two known volumes and molarities of reactants.
TOP: Calculations Involving Molarity

10. What is the molarity of Sr(NO3)2 in a solution resulting from mixing 150.0 mL of 0.0200 M HNO3 with 150.0 mL of 0.0100 M Sr(OH)2?
a. 0.00670 M
b. 0.00330 M
c. 0.00250 M
d. 0.00500 M
e. 0.0100 M

ANS: D
OBJ: Determine the molarity of the product made by mixing two known volumes and molarities of reactants.
TOP: Calculations Involving Molarity