Quiz Over Properties Of Water And Solutions

25 Questions | By Cameron24 | Last updated: Mar 22, 2022 | Total Attempts: 174

Questions

Settings

Water is the most common compound on the earth’s surface. It exists in different forms and is a combination of hydrogen and oxygen. Take this quiz on the properties of water and solutions to test how much you remember about this topic so far. All the best as you tackle it!

Questions and Answers

1.

A water solution containing an unknown quantity of a nonelectrolyte solute has a freezing point of -0.665ºC. What is the molal concentration of the solution if Kf = -1.86ºC/m?
- A.
  
  .010
- B.
  
  .358
- C.
  
  .355
- D.
  
  2.66
2.

Colligative properties depend on
- A.
  
  The concentration of the solute particles.
- B.
  
  the identity of the solute particle
- C.
  
  The boiling point and freezing point of the solution
- D.
  
  The physical properties of the solute particles.
3.

A water solution containing an unknown quantity of a nonelectrolyte solute has a freezing point of -0.21ºC. What is the molal concentration of the solution if Kf = -1.86ºC/m?
- A.
  
  0.12 m
- B.
  
  .11 m
- C.
  
  1.11 m
- D.
  
  1.12 m
4.

The attraction of water molecules overcomes the strength of covalent bonds in
- A.
  
  Molecular substances that are electrolytes.
- B.
  
  All molecular substances.
- C.
  
  None of the above
- D.
  
  Molecular substances that are not electrolytes.
5.

Electrolytes affect colligative properties differently than do nonelectrolytes because electrolytes
- A.
  
  Produce more moles of solute particles per mole of solute.
- B.
  
  Have lower boiling points
- C.
  
  Are volatile.
- D.
  
  Produce fewer moles of solute particles per mole of solute.
6.

How many milliliters water are needed to make a 0.171 M solution that contains 1.00 g of NaCl?
- A.
  
  171 mL
- B.
  
  100 mL
- C.
  
  17.1 mL
- D.
  
  1000 mL
7.

What is the molality of a solution that contains 5.10 mol KNO3 in 4.47 kg water?
- A.
  
  0.315 m
- B.
  
  0.779 m
- C.
  
  1.14 m
- D.
  
  1.02 m
8.

A solution containing a solute that dissolves as molecules; therefore, the solution does not conduct electricity
- A.
  
  Solute
- B.
  
  Electrolyte solution
- C.
  
  Nonelectrolyte solution
- D.
  
  Concentrated solution
9.

A solution holding less than the maximum possible amount of solute under the solution conditions
- A.
  
  Supersaturated solution
- B.
  
  Unsaturated solution
- C.
  
  Concentrated solution
- D.
  
  Saturated solution
10.

A concentrated form in which solutions are often stored
- A.
  
  Dilute solution
- B.
  
  Solute
- C.
  
  Stock solution
- D.
  
  Solution
11.

This selectively allows some substances to pass through but not others
- A.
  
  Henry's Law
- B.
  
  Semipermeable membrane
- C.
  
  Membranes
- D.
  
  Supersaturated solution
12.

A technique used to purify a solid; involves dissolving the solid in a solvent at high temperature, creating a saturated solution, then cooling the solution to cause the crystallization of the solid
- A.
  
  Henry's law
- B.
  
  Solute
- C.
  
  Solvent
- D.
  
  Recrystallization
13.

The pressure produced on the surface of a semipermeable membrane by osmosis or the pressure required to stop osmotic flow
- A.
  
  Solvent
- B.
  
  Osmosis
- C.
  
  Osmotic Pressure
- D.
  
  Solute
14.

The flow of solvent from a lower-concentration solution through a semipermeable membrane to a higher-concentration solution
- A.
  
  Membranes
- B.
  
  Osmosis
- C.
  
  Solute
- D.
  
  Solution
15.

A solution holding more than the normal maximum amount of solute
- A.
  
  Unsaturated solution
- B.
  
  Supersaturated solution
- C.
  
  Concentrated solution
- D.
  
  Saturated solution
16.

Physical properties of solutions that depend on the number of solute particles present but not the type of solute particles
- A.
  
  Colligative properties
- B.
  
  Molality (m)
- C.
  
  Boiling point elevation
- D.
  
  Molarity (M)
17.

If the amount of solute present in a solution at a given temperature is less than the maximum amount that can dissolve at that temperature, the solution is said to be
- A.
  
  Saturated.
- B.
  
  Concentrated.
- C.
  
  Supersaturated.
- D.
  
  Unsaturated.
18.

As temperature increases, solubility of gases in liquids
- A.
  
  Decreases
- B.
  
  Can increase or decrease.
- C.
  
  Increases.
- D.
  
  Is not affected.
19.

The rate of dissolution is
- A.
  
  Directly related to solubility.
- B.
  
  Not related to solubility.
- C.
  
  Related to the square of the solubility.
- D.
  
  Inversely related to solubility.
20.

Which of the following will dissolve most slowly?
- A.
  
  Small salt crystals in unstirred water
- B.
  
  Small salt crystals in stirred water
- C.
  
  Large salt crystals in unstirred water
- D.
  
  Large salt crystals in stirred water
21.

A substance whose water solution conducts a current is a(n)
- A.
  
  Electrolyte.
- B.
  
  Solute
- C.
  
  Nonpolar substance.
- D.
  
  Nonelectrolyte.
22.

Which of the following is expressed in grams of solute instead of moles of solute?
- A.
  
  a and b
- B.
  
  Molality
- C.
  
  Molarity
- D.
  
  Neither
23.

Which of the following is a thoroughly mixed homogeneous mixture of substances in a single phase?
- A.
  
  A suspension
- B.
  
  A colloid
- C.
  
  A solution
- D.
  
  A compound
24.

Which of the following is an example of a polar solvent?
- A.
  
  Carbon tetrachloride
- B.
  
  Water
- C.
  
  Gasoline
- D.
  
  Benzene
25.

Which of the following is a homogeneous mixture?
- A.
  
  Whole-wheat bread
- B.
  
  Sugar
- C.
  
  a sugar-water solution
- D.
  
  Water