Chemistry Unit 12 Question Preview (ID: 55672)
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Agitation prevents settling in a(n)
a) alloy
b) homogenous mixture
c) suspension
d) gaseous mixture
What type of solute-solvent combination is carbon dioxide in water?
a) gas-liquid
b) liquid-gas
c) liquid-liquid
d) cannot be determined
In a solution at equilibrium,
a) no dissolution occurs.
b) the rate of dissolution is less than the rate of crystallization.
c) the rate of dissolution is greater than the rate of cryllization.
d) the rate of dissolution and the rate of crystallization are equal.
A dissolved solute that does not form ions is
a) a nonelectrolyte
b) a weak electrolyte.
c) a strong electrolyte.
d) insoluble.
If the temperature stays the same, the solubility of gas liquids
a) increases with increasing pressure.
b) cannot reach equilibrium.
c) decreases with increasing pressure.
d) does not depend on pressure.
Which type of mixture contains the smallest particles?
a) emulsions
b) solutions
c) suspensions
d) colloids
Which does not affect the rate at which a solid dissolves?
a) the vapor pressure of the solvent
b) the temperature of the solvent
c) the surface area of the solid
d) the speed at which the solution is stirred
Under which conditions is more CO2 dissolved in a carbonated beverage?
a) in a glass at room temperature
b) in a bottle that has been left uncapped in the refrigerator
c) in a glass with ice cubes
d) in an unopened bottle in the refrigerator
Which of the following does not increase the rate at which a solid dissolves in water?
a) raising the temperature of the water
b) stirring the solution
c) using large pieces of the solid
d) crushing the solid
The rate at which a solid dissolves is
a) directly related to solubility.
b) inversely related to solubility.
c) related to the square of the solubility.
d) not related to solubility.
Increasing the surface area of the solute
a) increases the rate of dissolution.
b) decreases the rate of dissolution.
c) has no effect on the rate of dissolution.
d) can increase, decrease, or have no effect on the rate of dissolution.
Stirring increases the rate of dissolution because it
a) raises the temperature.
b) lowers the temperature.
c) brings fresh solvent into contact with the solute.
d) decreases the surface area of the solute.
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