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Solutions Part 2 Test
Test Description: Solutions Part 2 Test
Instructions: Answer all questions to get your test result.
1) Which of the following is an electrolyte?
A
sugar
B
glass
C
sodium chloride (table salt)
D
water
2) A substance whose water solution does NOT conduct a current is a(n)
A
nonelectrolyte
B
polar substance
C
ionic substance
D
electrolytes
3) Molecules whose water solutions conduct current
A
require carbon to decompose in water
B
can crystallize
C
do not dissolve in water.
D
ionize in water.
4) Which of the following does NOT increase the rate of dissolving a solid in water?
A
raising the temperature
B
using larger pieces of solid
C
crushing the solid
D
stirring
5) Which of the following decreases the average speed of solvent molecules?
A
decreasing the temperature
B
increasing the temperature
C
stirring the solution
D
adding more solvent
6) Which of the following will dissolve most rapidly?
A
powdered sugar in cold water
B
powdered sugar in hot water
C
sugar cubes in hot water
D
sugar cubes in cold water
7) What is Henry’s Law?
A
When volume and temperature are constant, gas pressure increases as the number of molecules increases.
B
The inverse relationship between volume and the pressure of a gas.
C
The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.
D
The direct relationship between the pressure of a gas and its temperature in Kelvin.
8) What is an example of Henry’s Law?
A
spray paint
B
filling up a tire
C
carbonated beverage (soda)
D
bottled water
9) Deep sea divers may experience a condition called what?
A
cramps
B
bends
C
migraines
D
blurry vision
10) Liquids and solids exhibit practically no change in solubility with changes in
A
temperature
B
moles
C
pressure
D
volume
11) An application of Henry’s Law is the administration of anesthetic
A
liquids
B
gases
C
water
D
solids
12) What are the three types of solutions for a solubility curve?
A
not full, full, really full
B
emulsions, colloidals, solutions
C
unconcentrated, concentrated, superconcentrated
D
unsaturated, saturated, supersaturated
13) What exactly does a solubility curve show?
A
The maximum amount of a substance that can be dissolved in 100g H20 at a given temperature
B
How concentrated a solution is
C
The amount of H2O needed to dissolve something
D
How much solute has dissolved at 30oC
14) Concentration is defined as
A
How much solution is dissolved in a given amount of solute
B
A substance that dissolves in water to give a solution that does not conduct an electric current
C
How much solute is dissolved in a given amount of solution
D
A substance that dissolves in water to give a solution that conducts electric current
15) The concentration of a solution is its
A
molarity
B
molar volume
C
volume
D
molar mass
16) The _______ moles you have per liter means the ______ _________ the solution will be. The ________ moles you have per liter means the _______ _________ the solution will be.
A
more, less concentrated; more less dilute
B
less, more dilute; less, more concentrated
C
less, more concentrated; more, more dilute
D
more, more concentrated; less, more dilute
17) Calculate the Molarity of a solution that has 2.3 moles dissolved in 4.6 liters total
A
2.0 M
B
0.5 M
C
10.6 M
D
6.9 M
18) How many moles of CuSO4 ⋅ 5H2O are in 0.8 L of a 0.6 M solution?
A
0.48 moles
B
0.20 moles
C
1.4 moles
D
1.3 moles
*select an answer for all questions
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