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WorksheetsSolutions Quiz FCHS
Total questions: 16
Worksheet time: 10mins
Which of the following statements is NOT true regarding solutions?
Solutions are homogeneous mixtures.
Solid solutions are called alloys.
The medium in which a substance dissolves is called the solvent.
The substance that dissolves (or is in a smaller quantity) is called the diluent.
Solutions can be any state of matter.
Which two substances would form two immiscible layers?
water and hexane
water and ethanol
ethanol and acetone
benzene and hexane
What is generally true regarding the solubility of gases?
The solubility decreases with increasing temperature.
The solubility increasing with increasing temperature.
Only nonpolar gases are soluble in water.
Stirring increases the solubility of gases, but decreases the solubility of solids.
How many grams of KNO3 are able to dissolve in 100 grams of water at 50 oC?
42 g
84 g
168 g
95 g
What is the molarity of a solution prepared by dissolving 10.5 grams of sodium chloride in a total volume of 250.0 mL?
42.0 M
0.719 M
7.19 x 10-4 M
0.0449 M
How much 12.0 M HCl is required to make 500.0 mL of 2.35 M HCl?
2550 mL
97.9 mL
0.0564 L
2.69 mL
Which of the following types of solutions has more room to dissolve solute?
supersaturated
saturated
unsaturated
A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility
lowering the temperature of the solvent
stirring the solute in the solution
increasing the pressure on the solution
increasing the particle size of the solute
What is NOT true about colligative properties?
They depend on the number of particles dissolved.
They depend on the identity of the solute.
Freezing point depression is a colligative property.
Boiling point elevation is a colligative property.
Vapor pressure lowering is a colligative property.
What is the molarity of a solution that has 2.32 moles dissolved in 250.0 mL?
9.28 M
.00928 M
94.0 M
0.580 M
What statement does NOT apply to the solution in the center?
It is a strong electrolyte
It has a soluble ionic compound as the solute
It conducts electricity
it is a weak electrolyte
Click on solute(s) with an i value of 2. There is more than one answer.
NaCl
CaCl2
0.1 M KNO3
0.4 M CH3CH2OH
Which of the following aqueous solutions will have the highest boiling point?
2.0 M CH3OH
2.0 M C6H12O6
2.0 M KNO3
2.0 M SrCl2
A technican prepared a solution by heating 100 mL of distilled water while adding KCl crystals until no more KCl would dissolve. She then capped the clear solution and set it aside on the lab counter. After several hours she noticed the solution had become cloudly and some solid had settled to the bottom of the flask. Which statement best describes what happened?
As the solution cooled, evaporation of water increased the KCl concentration beyond its solubility.
Water molecules, trapped with the KCl crystals, were released after heating.
At lower temperatures the solubility of KCl decreased and recrystallization occurred.
At increased temperatures the solubility of KCl increased and remained too high after cooling.
What is the molarity of a 0.30 liter solution containing 0.50 moles of H2SO4?
1.7 M
0.60 M
0.80 M
0.15 M
130 g of KI (potassium iodide) is dissolved in 100 g of water at 10 degrees C. This solution is
