Chemistry

Table F

Table G

Solutions

Molarity

Boiling/Freezing Pt

100

Which compound is insoluble in water?

a. Calcium bromide

b. potassium bromide

c.sliver bromide

d. sodium bromide

C. Silver Bromide

100

What is the total number of grams of potassium chloride needed to saturate exactly 300 grams of water at 10C?

a. 60

b.70

c.80

d.90

d. 90

100

Which sample of matter is classified as a solution?

a. H20(s)

b.H20 (l)

c. CO2 (g)

d. CO2 (aq)

100

What is the molarity of the solution that contains 0.50 mole of NaOH in 0.50 liter solution?

1.0M

100

Which solution will freeze at the lower temperature?

a. 1 mole of sugar in 500g of water

b. 1 mole of sugar in 1,000g of water

c. 2 moles of sugar in 500g of water

d. 2 moles of sugar in 1,000g of water

c. 2 moles of sugar in 500g of water

200

Based on Reference table F, which of the following saturated solutions would be least concentrated?

a. sodium sulfate

b. potassium sulfate

c. copper (II) sulfate

d. barium sulfate

200

What is the mass of NH4Cl that must dissolve in 200 grams of water at 50C to make a saturated solution.

104g

200

Which must be a mixture of substances?

a. Solid

b. Liquid

c. gas

d. solution

200

What is the molarity of 3L of a solution that contains 0.60 moles of dissolved ammonia?

0.2M

200

Which solution has the highest boiling point?

a. 1.0M KNO3

b. 2.0M KNO3

c. 1.0M Ca(NO3)2

d. 2.0M Ca(NO3)2

d. 2.0M Ca (NO3)2

300

According to Reference table F, which substance is most soluble?

a. AgI

b. CaSO4

c. PbCl2

d. (NH4)2CO3

300

A saturated solution of NaNO3 is prepared at 60C using 100 grams of water. As this solution is cooled to 10C, NaNO3 precipitates (settles) out of the solution. The resulting solution is saturated. Approximately how many grams of NaNO3 settled out of the original solution?

46g

300

A dilute, aqueous potassium nitrate solution is best classified as a

homogeneous mixture

300

Molarity is defined as the

a. moles of solute per kilogram of solvent

b. moles of solute per liter of solution

c. mass of a solution

d. volume of a solvent

b. moles of solute per liter of solution

300

Which concentration of a solution of CH3OH in water has the lowest freezing point?

a. 0.1 M

b. 0.01 M

c. 0.001 M

d. 0.0001 M

A. 0.1 M

400

According to Table F, which ions combine with chloride ions to form an insoluble compound?

a. Fe2+ ions

b. Ca2+ ions

c. Li+ ions

d. Ag+ ions

400

Based on Reference Table G, what is the maximum number of grams of KCl(s) that will dissolve in 200 grams of water at 50C to produce a saturated solution?

84g

400

Which formula represents a mixture?

a. C6H12O6 (l)

b. C6H12O6 (s)

c. LiCl (aq)

d. LiCl (s)

c. LiCl (aq)

400

What is the volume of a 2.3M solution of NaCl that contains 0.45 moles of solute?

.195L

400

When ethylene glycol (an antifreeze is added to water, the boiling point of the water

a. decreases, and the freezing point decreases

b. decreases, and the freezing point increases

c. increases, and the freezing point decreases

d. increases, and the freezing point increases

c. increases, and the freezing point decreases

500

According to Table F, which compound has a very low solubility in water?

a. calcium hydroxide

b. calcium phosphate

c. sodium carbonate

d. sodium sulfide

b. calcium phosphate

500

Based on Table G, state the general relationship between solubility and temperature of an aqueous SO2 solution at standard pressure

an inverse relationship

500

A mixture of crystals and salt and sugar is added to water and stirred until all solids have dissolved. Which statement best describes the resulting mixture

a. The mixture is homogeneous and can be separated by filtration

b. The mixture is homogeneous and cannot be separated by filtration

c. The mixture is heterogeneous and can be separated by filtration

d. The mixture is heterogeneous and cannot be separated by filtration

b. The mixture is homogeneous and cannot be separated by filtration

500

How many grams are in a 2.0L solution of 3.5M solution of FeCl2?

886.2g

500

Compared to a 2.0M aqueous solution of NaCl at 1 atmosphere, a 3.0M aqueous solution of NaCl at 1 atmosphere has a

a. lower boiling point and a higher freezing point

b. lower boiling point and a lower freezing point

c. higher boiling point and a higher freezing point

d. higher boiling point and a lower freezing point