1. According to Reference Table G, which of these
substances is most soluble at 60ºC?
1) NaCl
2) KCl
3) KClO3
4) NH4Cl
2. Solubility data for four different salts in water at 60°C
are shown in the table below.
Which salt is most soluble at 60°C?
1) A
3) C
2) B
4) D
3. According to Reference Table F, which compound is
most soluble?
1) AgBr
2) PbCl2
3) AgI
4) CaCl2
4. As the temperature increases from 0ºC to 25ºC the
amount of NH3 that can be dissolved in 100 grams of
water
1) decreases by 10 grams 3) increases by 10 grams
2) decreases by 40 grams 4) increases by 40 grams
5. Which of the salts listed below is most soluble at 60ºC?
1) NaNO3
2) KNO3
3) NH4Cl
4) KCl
6. According to Table F, which of these salts is least
soluble in water?
1) LiCl
2) RbCl
3) FeCl2
4) PbCl2
7. A student tested the solubility of a salt at different
temperatures and then used Reference Table g to identify
the salt. The student's data table appears below.
What is the identity of the salt?
1) potassium nitrate
3) potassium chlorate
2) sodium chloride
4) ammonium chloride
8. According to Reference Table F, which substance is
most soluble?
1) AgI
2) CaSO4
3) PbCl2
4) (NH4)2CO3
9. Based on Reference Table F, which salt is least soluble?
1) FeCO3
2) Na2CO3
3) BaCl2
4) CaCl2
10. A student obtained the following data in determining the
solubility of a substance.
12. Given the diagram below that shows carbon dioxide in
an equilibrium system at a temperature of 298 K and a
pressure of 1 atm:
Which graph best represents the solubility curve drawn
from the results obtained by the student?
1)
13.
2)
14.
3)
15.
16.
4)
17.
18.
11. According to Reference Table F, which of these
compounds is most soluble at 298 K and 1 atm?
1) PbCl2
2) AgCl
3) PbCrO4
4) PbCO3
Which changes must increase the solubility of the carbon
dioxide?
1) increase pressure and decrease temperature
2) increase pressure and increase temperature
3) decrease pressure and decrease temperature
4) decrease pressure and increase temperature
A gas is most soluble in a liquid under conditions of
1) high temperature and high pressure
2) high temperature and low pressure
3) low temperature and high pressure
4) low temperature and low pressure
Based on Reference Table G, which of the following
substances is most soluble at 60ºC?
1) NH4Cl
2) KCl
3) NaCl
4) NH3
Which compound decreases in solubility as the
temperature of the solution is increased from 10ºC to
50ºC?
1) NH4Cl
2) NaCl
3) NH3
4) NaNO3
The attraction between water molecules and an Na+ ion
or a Cl– ion occurs because water molecules are
1) linear
3) polar
2) symmetrical
4) nonpolar
Based on Reference Table F, which of the following
compounds is least soluble in water?
1) NaCl
2) Pb2ClO3
3) Na2CrO4
4) PbCrO4
The solubility of a salt in a given volume of water
depends primarily on the
1) surface area of the salt crystals
2) temperature of the water
3) rate at which the salt and water are stirred
4) pressure on the surface of the water
19. According to Reference Table G, which of the following
substances is least soluble in 100 grams of water at 50ºC?
1) NaCl
3) NH4Cl
2) KCl
4) HCl
20. The graph below represents four solubility curves.
Which curve best represents the solubility of a gas in
water?
21.
22.
23.
24.
25.
26.
1) A
3) C
2) B
4) D
Which of the following compounds is least soluble in
water?
1) copper (II) chloride
3) iron (III) hydroxide
2) aluminum acetate
4) potassium sulfate
When PbI2(s) is added to Na2CO3(aq), a white precipitate
is formed. According to Reference Table F, the white
precipitate most likely is
1) KNO3
2) PbCO3
3) NaI
4) Na2CO3
A change in pressure would have the greatest effect on
the solubility of a
1) solid in a liquid
3) liquid in a liquid
2) gas in a liquid
4) liquid in a solid
Based on Reference Table F, which of the following
saturated solutions would be the least concentrated?
1) sodium sulfate
3) copper (II) sulfate
2) potassium sulfate
4) barium sulfate
Which compound is most soluble in water?
1) silver acetate
3) silver nitrate
2) silver chloride
4) silver sulfate
As the pressure on a gas confined above a liquid
increases, the solubility of the gas in the liquid
1) decreases
3) remains the same
2) increases
27. In an aqueous solution of potassium chloride, the solute is
1) Cl
2) K
3) KCl
4) H2O
28. According to Reference Table G, how many grams of
KNO3 would be needed to saturate 200 grams of water at
70ºC?
1) 43 g
3) 134 g
2) 86 g
4) 268 g
29. A student determined the mass, in grams, of compound X
that would saturate 30. grams of water over a
temperature range of 40.ºC in 10.-degree intervals. The
results are tabulated below.
30.
31.
32.
33.
34.
If this solubility trend continues, what is the total number
of grams of compound X that will dissolve in 30. grams
of water at 60.ºC?
1) 16
3) 48
2) 32
4) 64
At room temperature, the solubility of which solute in
water would be most affected by a change in pressure?
1) methanol
3) carbon dioxide
2) sugar
4) sodium nitrate
According to Reference Table F, which compound is
most soluble in water?
1) BaCO3
2) BaSO4
3) ZnCO3
4) ZnSO4
Based on Reference Table G, what change will cause the
solubility of KNO3(s) to increase?
1) decreasing the pressure
2) increasing the pressure
3) decreasing the temperature
4) increasing the temperature
According to the Reference Table G, which of the
following substances is least soluble in 100 grams of H2
O(…) at 50ºC?
1) KCl
3) NH4Cl
2) NaCl
4) HCl
Carbon dioxide gas is most soluble in water under
conditions of
1) high pressure and low temperature
2) high pressure and high temperature
3) low pressure and low temperature
4) low pressure and high temperature
35. Based on Reference Table G, what is the maximum
number of grams of KCl(s) that will dissolve in 200
grams of water at 50°C to produce a saturated solution?
1) 38 g
3) 58 g
2) 42 g
4) 84 g
36. Which salt has the greatest change in solubility between
30ºC and 50ºC?
1) KNO3
3) NaNO3
2) KCl
4) NaCl
37. According to Reference Table G, which compound's
solubility decreases most rapidly when the temperature
increases from 50ºC to 70ºC?
1) NH3
2) HCl
3) SO2
4) KNO3
38. A 2.00-liter sample of a gas has a mass of 1.80 grams at
STP. What is the density, in grams per liter, of this gas at
STP?
1) 0.900
3) 11.2
2) 1.80
4) 22.4
39. A student obtained the following data in a chemistry
laboratory.
Based on Reference Table g, which of the trials seems to
be in error?
1) 1
3) 3
2) 2
4) 4
40. According to Reference Table G, how does a decrease in
temperature from 40°C to 20°C affect the solubility of
NH3 and KCl?
1) The solubility of NH3 decreases, and the
solubility of KCl decreases.
2) The solubility of NH3 decreases, and the
solubility of KCl increases.
3) The solubility of NH3 increases, and the
solubility of KCl decreases.
4) The solubility of NH3 increases, and the
solubility of KCl increases.
41. Based on Reference Table G, which of the following
substances is most soluble at 50°C?
1) KClO3
2) NH3
3) NaCl
4) NH4Cl
42. At which temperature can water contain the most
dissolved oxygen at a pressure of 1 atmosphere?
1) 10.ºC
3) 30.ºC
2) 20.ºC
4) 40.ºC
43. According to Reference Table G, what is the
approximate difference between the amounts of KClO3
and KNO3 soluble in 100 grams of water at 40ºC?
1) 17 g
3) 47 g
2) 22 g
4) 64 g
44. At STP, which of these substances is most soluble in H2
O?
1) CCl4
2) CO2
3) HCl
4) N2
45. Which compound is least soluble in 100 grams of water
at 40°C?
1) SO2
2) NaCl
3) KClO3
4) NH4Cl
46. According to Reference Table G, a temperature change
from 10°C to 30°C would have the least effect on the
solubility of
1) NaCl
2) KClO3
3) NH3
4) SO2
Reference Tables
Reference Tables
Reference Tables
Reference Tables
Answer Key
1.
4
30.
3
2.
4
31.
4
3.
4
32.
4
4.
2
33.
2
5.
1
34.
1
6.
4
35.
4
7.
3
36.
1
8.
4
37.
1
9.
1
38.
1
10.
1
39.
4
11.
2
40.
3
12.
1
41.
4
13.
3
42.
1
14.
1
43.
3
15.
3
44.
3
16.
3
45.
1
17.
4
46.
1
18.
2
19.
1
20.
2
21.
3
22.
2
23.
2
24.
4
25.
3
26.
2
27.
3
28.
4
29.
4