Question 1

Which of the following best describes a solution in chemistry?

Accepted Answer

A homogeneous mixture of two or more substances

Question 2

In a solution made by dissolving 5 g of sugar in 100 mL of water, which is the solute?

Accepted Answer

Sugar

Question 3

Which property is NOT characteristic of a solution?

Accepted Answer

The solute can be separated by filtration

Question 4

Why does solid LiCl dissolve in water?

Accepted Answer

Li$$^+$$ ions are attracted to the oxygen atom of water and Cl$$^-$$ ions are attracted to the hydrogen atom of water

Question 5

Which of the following solutes will dissolve in water? Select all that apply.

Accepted Answer

CH$$_3OH ($$polar)

Question 6

A solution is prepared by mixing 20.0 mL of ethyl alcohol and 30.0 mL of methyl alcohol. Which is the solute?

Accepted Answer

Methyl alcohol

Question 7

Which statement best explains the phrase 'like dissolves like'?

Accepted Answer

Solutes dissolve in solvents with similar polarity

Question 8

Which of the following is a correct example of a solution where the solvent is a gas?

Accepted Answer

Air (O$$_2 in N$_2)$$

Question 9

Which process can be used to separate the solute from the solvent in a solution?

Accepted Answer

Evaporation

Question 10

Copper(II) sulfate (CuSO$$_4) is $$dissolved in water. What happens at the molecular level?

Accepted Answer

CuSO$$_4$$ dissociates into ions that are evenly dispersed among water molecules

Question 11

Which of the following is NOT a possible combination for a solution?

Accepted Answer

Nonpolar solute in polar solvent

Question 12

Methanol (CH$$_3OH) is $$soluble in water because:

Accepted Answer

It is polar and forms hydrogen bonds with water

Question 13

A nurse explains to a patient that the amount of water in her body is regulated by:

Accepted Answer

The concentration of electrolytes and the rate at which waste products are removed

Question 14

Which of the following statements about solutions is FALSE?

Accepted Answer

Solutes in solutions can be separated by filtration

Question 15

Which equation best represents the dissolution of NaCl in water?

Accepted Answer

$$\mathrm{NaCl} (s) \rightarrow \mathrm{Na}^+ (aq) + \mathrm{Cl}^- (aq)$$

Question 16

Which of the following is a real-world example of a solution important in medicine?

Accepted Answer

Saline solution (NaCl in water) used for intravenous therapy

Question 17

If 1.50 g of NaCl is dissolved in 100.0 mL of water, which is the solvent?

Accepted Answer

Water

Question 18

Which of the following best explains why nonpolar solutes do not dissolve in water?

Accepted Answer

Water is polar and cannot form strong interactions with nonpolar solutes

Question 19

Which of the following is NOT a method for separating components of a solution?

Accepted Answer

Filtration

Question 20

A solution of O$$_2$$ and N$$_2$$ contains 1200 mL of O$$_2$$ and 800 mL of N$$_2. $$Which is the solute?

Accepted Answer

O$$_2$$

Chapter 9: Solutions – General Chemistry Study Notes

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