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WorksheetsRegents solution review
Total questions: 15
Worksheet time: 8mins
In an aqueous solution of sodium chloride, the solute is
Cl
Na
NaCl
H2O
Based on Reference Table F, which of the following saturated solutions would be the least concentrated?
sodium sulfate
potassium sulfate
copper (II) sulfate
barium sulfate
Based on Reference Table F, which salt is least soluble?
FeCO3
Na2CO3
BaCl2
CaCl2
The solubility of KClO3(s) in water increases as
the temperature of the solution increases
the temperature of the solution decreases
pressure on the solution increases
pressure on the solution decreases
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?
38 g
42 g
58 g
84 g
As the pressure on a gas confined above a liquid increases, the solubility of the gas in the liquid
decreases
increases
remains the same
When 5 grams of KCl are dissolved in 50. grams of water at 25°C, the resulting mixture can be described as
heterogeneous and unsaturated
heterogeneous and supersaturated
homogeneous and unsaturated
homogeneous and supersaturated
What is the total number of moles of solute in 250 milliliters of a 1.0 M solution of NaCl?
1.0 mole
0.25 mole
0.50 mole
42 moles
A 2400.-gram sample of an aqueous solution contains 0.012 gram of NH3. What is the concentration of NH 3 in the solution, expressed as parts per million?
5.0 ppm
15 ppm
20. ppm
50. ppm
A saturated solution of NaNO3 is prepared at 60.ºC using 100. grams of water. As this solution is cooled to 10.ºC, NaNO3 precipitates (settles) out of the solution. The resulting solution is saturated. Approximately how many grams of NaNO3 settled out of the original solution?
46 g
61 g
85 g
126 g
Compared to a 2.0 M aqueous solution of NaCl at 1 atmosphere, a 3.0 M aqueous solution of NaCl at 1 atmosphere has a
lower boiling point and a higher freezing point
lower boiling point and a lower freezing point
higher boiling point and a higher freezing point
higher boiling point and a lower freezing point
Which statement explains why Br2 is a liquid at STP and I2 is a solid at STP?
Molecules of Br2 are polar, and molecules of I2 are nonpolar.
Molecules of I2 are polar, and molecules of Br2 are nonpolar.
Molecules of Br2 have stronger intermolecular forces than molecules of I2 .
Molecules of I2 have stronger intermolecular forces than molecules of Br2 .
What is the concentration of a solution, in parts per million, if 0.02 gram of Na3PO4 is dissolved in 1000 grams of water?
20 ppm
2 ppm
0.2 ppm
0.02 ppm
Based on Table H, what is the vapor pressure of CH3 COOH at 90.°C
40. kPa
48 kPa
114 kPa
150. kPa
Based on Reference Table H, which sample has the highest vapor pressure?
water at 20ºC
water at 80ºC
ethanol at 50ºC
ethanol at 65ºC
