Question 1

Which of the following best describes a solution?

Accepted Answer

A homogeneous mixture of two or more substances.

Question 2

Steel is an example of which type of solution?

Accepted Answer

Solid solution

Question 3

What is the molarity of a solution prepared by dissolving 15.0 grams of NaCl in 1000 mL of water? (Molar mass of NaCl = 58.44 g/mol)

Accepted Answer

$$0.257\ \mathrm{M}$$

Question 4

Which of the following is NOT a solution?

Accepted Answer

Sand and water

Question 5

If 12.0 g of sodium acetate (Molar mass = 82 g/mol) is dissolved in 200 mL of water, what is the molarity of the solution?

Accepted Answer

$$0.732\ \mathrm{M}$$

Question 6

Which of the following compounds is a strong electrolyte?

Accepted Answer

$$\mathrm{NaCl}$$

Question 7

A solution is prepared by dissolving 2.45 g of sugar in 200.0 g of water. What is the mass percent of sugar in the solution?

Accepted Answer

$$1.22\%$$

Question 8

How many moles of NaCl are in 34.2 grams of a 45.5% by mass NaCl solution?

Accepted Answer

$$0.267$$

Question 9

What is the molarity of a solution prepared by dissolving 10.7 g NaCl in 0.250 L of water? (Molar mass of NaCl = 58.44 g/mol)

Accepted Answer

$$0.732\ \mathrm{M}$$

Question 10

How many moles of KOH are contained in 750 mL of 5.00 M KOH solution?

Accepted Answer

$$3.75\ \mathrm{mol}$$

Question 11

What is the molarity of a solution prepared by dissolving 54.3 g of Ca(NO$$_3$$)$$_2 in 355 mL of $$water? (Molar mass of Ca(NO$$_3$$)$$_2 = 164.1 g/$$mol)

Accepted Answer

$$0.943\ \mathrm{M}$$

Question 12

How many grams of KCl are needed to make 50.0 mL of 2.45 M KCl? (Molar mass of KCl = 74.55 g/mol)

Accepted Answer

$$9.13\ \mathrm{g}$$

Question 13

A 0.15 M solution of BaCl$$_2$$ contains:

Accepted Answer

$$0.30\ \mathrm{M}$$ \mathrm{Cl^-}$$ ions and 0.15$$\ \mathrm{M}$$ \mathrm{Ba$$^{2+}$$}$$ ions

Question 14

Which one of the following aqueous solutions would have the highest concentration of K$$^+ (aq) $$ions? (Assume total solubility in water.)

Accepted Answer

1.0 M K$$_3PO$_4$$

Question 15

How many liters of a 2.18 M solution can be made from 200.0 g K$$_2S$$? (Molar mass = 110.3 g/mol)

Accepted Answer

$$0.825\ \mathrm{L}$$

Question 16

What volume of 12.0 M HCl is required to make 75.0 mL of 3.50 M HCl?

Accepted Answer

$$21.9\ \mathrm{mL}$$

Question 17

What molarity should the stock solution be if you want to dilute 25.0 mL to 100.0 mL and have the final concentration be 0.103 M?

Accepted Answer

$$0.412\ \mathrm{M}$$

Question 18

How many mL of 0.218 M sodium sulfate react with exactly 25.34 mL of 0.113 M Ba(NO$$_3$$)$$_2$$ given the reaction: $$\mathrm{Ba(NO_3$)_2 (aq) + Na_2SO_4 (aq) \rightarrow $$BaSO_4$$ (s) + 2NaNO_3 (aq)}$$?

Accepted Answer

$$13.1\ \mathrm{mL}$$

Question 19

Determine the volume (in liters) of 0.500 M NaOH solution required to neutralize 1.50 L of 0.750 M H$$_2SO$_4. $$The neutralization reaction is: $$\mathrm{H_2SO_4 (aq) + 2NaOH (aq) \rightarrow Na_2SO_4 (aq) + 2H_2O (l)}$$

Accepted Answer

$$4.50\ \mathrm{L}$$

Question 20

What volume (in L) of 2.00 M KCl solution contains 23.0 g of KCl? (Molar mass of KCl = 74.55 g/mol)

Accepted Answer

$$0.154\ \mathrm{L}$$

Solutions: Properties, Calculations, and Applications (Ch. 13 Study Guide)

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