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Study Quiz 2
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1
If a solute dissolves in a solvent, what is likely to be true?
A)The solute-solute attractions are greater than the solvent-solvent attractions.
B)The solute-solute attractions are less than the solvent-solvent attractions.
C)The solute-solvent attraction is greater than the sum of the solute-solute and solvent-solvent attraction.
D)There is a strong attraction between solute and solvent molecules.
2
Water is an example of a molecule
A)with a permanent dipole
B)capable of hydrogen bonding to another water molecule
C)with a partial positive charge on its hydrogen atoms
D)All of the above are true.
3
Which combination of solid and liquid would likely form a solution?
A)Ionic solid and non-polar liquid
B)Ionic solid and polar liquid
C)Non-polar solid and polar liquid
D)Polar solid and non-polar liquid
4
What happens when KBr (s) is dissolved in water?
A)Br– ions are attracted to the oxygen atoms of the water molecules.
B)Br– ions are repelled by the hydrogen atoms of the water molecules.
C)K+ ions are attracted to the oxygen atoms of the water molecules.
D)K+ ions are repelled by the oxygen atoms of the water molecules.
5
What is the term for a substance that provides ions when dissolved in water?
A)An electrolyte
B)A molecular solute
C)A non-electrolyte
D)A covalent compound
6
The ∆EN for the binary compound CuCl is 1.26. Which statement is true about CuCl?
A)This ionic compound is probably soluble in water.
B)This ionic compound is probably not soluble in water.
C)This polar compound is probably soluble in water.
D)This polar compound is probably not soluble in water.
7
Increasing the temperature of the solvent
A)increases the solubility of solid, liquid and gaseous solutes
B)decreases the solubility of gaseous solute
C)increases the solubility of liquid solutes more than solid solutes
D)affects the solubility of solid solutes only
8
In which the following cases is pressure a factor in the solubility of the solute in the solvent?
A)Sugar is dissolved in water.
B)Alcohol is dissolved in water.
C)Acetylene gas is mixed with oxygen in a blowtorch.
D)Carbon dioxide is dissolved in sparking wine.





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