Question 21 Which of the following is NOT a property of water?

Question 21  

Which of the following is NOT a property of water?

strong surface tension

ability to dissolve polar molecules

low boiling point

high capillary action with glass

Question 22

Which of the following statements regarding water is true?

Water is called the universal solvent because it dissolves everything.

Water dissolves only non-polar substances.

Water dissolves polar and ionic substances.

Water dissolves both polar and non-polar substances.

Question 23

Which of the following is soluble in water?

Cu(OH)2

PbSO4

RbNO3

Ca3(PO4)2

Question 24

Which of the following mixtures of reactants will NOT form a precipitate?

Zn(NO3)2 and Na2S (aq)

Rb2S (aq) and LiCl (aq)

K2CO3 (aq) and Mg(NO3)2 (aq)

Na3PO4 (aq) and AgNO3 (aq)

Question 25

Which of the following describes the correct net ionic equation for the reaction of copper (II) chloride solution with silver nitrate solution?

CuCl2 (aq) + AgNO3 (aq) →   Cu(NO3)2 (aq) + AgCl (s)

CuCl2 (aq) + 2AgNO3 (aq) →   Cu(NO3)2 (aq) + 2AgCl (s)

Cu2+ (aq) + 2Cl- (aq) + 2Ag+ (aq) + 2NO3- (aq)  →  Cu2+ (aq) + 2NO32- (aq) + 2AgCl (s)

2Cl- (aq) + 2Ag+ (aq)  →  2AgCl (s)

Question 26

Which of the following best describes a solution?

Solids settle in the bottom of the beaker after being left to sit.

Solute and solvent cannot be differentiated.

Two samples differ when taken from the same beaker.

Chunks are suspended in a fluid.

Question 27

When carbon dioxide gas is dissolved in water, the carbon dioxide gas is called the:

solute

solution

solvent

fluid

Question 28

Which of the following is a colligative property of solutions?

Vapor pressure lowering

Boiling point depression

Freezing point elevation

Polarity elevation

Question 29

Ethylene glycol, C2H6O2, is a nonvolatile substance unable to form ions in water. If 38.6 grams of ethylene glycol is dissolved in 175 grams of water, what is the freezing point of the solution? Kf = 1.86°C/m; Kb = 0.512°C/m

-6.61°C

1.82°C

6.61°C

-1.82°C

Question 30

The smaller the pH scale value, the greater the concentration of H3O+ ions.

TRUE

FALSE

Question 31

A solution of NaOH has a concentration of 3.02 x 10-2 M. What is the pOH of this solution?

pOH = 3.02

pOH = 2.00

pOH = 1.52

pOH = 12.48

Question 32

Given a solution with a pH of 2.8, what is the [H+] of the solution?

2.8 M

6.31 x 10-12 M

1.58 x 10-3 M

11.2 M

Question 33

An HCl solution has a concentration of 3.26 x 10-2 M. What is the pH of this solution?

pH = 12.5

pH = 1.49

pH = 3.3

pH = 2.0

Question 34

The equivalence point is:

The point at which the concentrations of base and acid are equal

The point at which the volumes of base and acid are equal

The point at which the concentration and volumes of base and acid are equal

The point at which the number of moles of hydrogen and hydroxide ions are equal

Question 35

128 mL of 1.50 x 10-2 M NaOH is used to titrate 225 mL of a monoprotic acid with unknown concentration to reach the equivalence point. What is the concentration of the original acid?

1.50 x 10-2 M

1.17 x 10-1 M

1.92 x 10-3 M

8.53 x 10-3 M