Solubility

25 July 2022
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23 test answers

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question
How many grams of NaNO3 would have to be added to 100. grams of water at 45°C to make a saturated solution of this salt?
answer
110
question
Which compound is least soluble in water at 60.°C?
answer
KClO3
question
According to Reference Table G, which substance forms an unsaturated solution when 80 grams of the substance is dissolved in 100 grams of H2O at 10°C?
answer
KI
question
Which statement is true for a saturated solution?
answer
The rate of dissolving equals the rate of crystallizing.
question
A solution containing 60 grams of NaNO3 completely dissolved in 50. grams of water at 50°C is classified as being
answer
Supersaturated
question
According to Reference Table G, which compound's solubility decreases most rapidly when the temperature increases from 50°C to 70° C?
answer
NH3
question
According to Reference Table G, which solution is saturated at 30°C?
answer
12 grams of KClO3 in 100 grams of water
question
Based on Table G, what is the approximate mass of NH3 that must be dissolved in 200 grams of water to produce a saturated solution at 20.°C?
answer
112 g
question
According to Reference Table G, a temperature change from 10°C to 30°C would have the least effect on the solubility of
answer
NaCl
question
According to Reference Table G, how many grams of KNO3 would be needed to saturate 200 grams of water at 70°C?
answer
268 g
question
According to Reference Table G, which of the following saturated solutions is the most concentrated?
answer
KNO3 at 70°C
question
According to Reference Table G, which of these substances is most soluble at 60°C?
answer
According to Reference Table G, which of these substances is most soluble at 60°C?
question
According to Reference Table G, a temperature change from 60°C to 90°C has the least effect on the solubility of
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SO2
question
The solubility of KCl(s) in water depends on the
answer
Temperature of the water
question
Which diagram correctly shows two water molecules in the box, including the correct orientation of each water molecule toward the chloride ion?
answer
3
question
Which compound forms a saturated solution at 40°C that contains 46 grams per 100 grams of water?
answer
NH4Cl
question
According to Reference Table G, how does a decrease in temperature from 40°C to 20°C affect the solubility of NH3 and KCl?
answer
The solubility of NH3 increases, and the solubility of KCl decreases.
question
A solution contains 35 grams of KNO3 dissolved in 100 grams of water at 40°C. How much more KNO3 would have to be added to make it a saturated solution?
answer
29 g
question
Which sample of matter is classified as a solution?
answer
CO2(aq)
question
As the pressure on a gas confined above a liquid increases, the solubility of the gas in the liquid
answer
Increases
question
What occurs when NaCl(s ) is added to water?
answer
The boiling point of the solution increases, and the freezing point of the solution decreases.
question
What is the mass of NH4Cl that must dissolve in 200 grams of water at 50.°C to make a saturated solution?
answer
104 g
question
According to Reference Table G, which solution at equilibrium contains 50 grams of solute per 100 grams of H2O at 75°C?
answer
a saturated solution of KCl