Question

QUESTION 1

Which is not a physical property of water?

		Weak adhesion with glass
		Strong cohesion
		Strong surface tension
		Ability to move up through thin tubes

3 points   

QUESTION 2

Water's ability to dissolve many ionic and covalent substances is based on water's:

		melting point
		electrical conductivity
		molecular shape and polarity
		surface tension

3 points   

QUESTION 3

The phrase that best describes the solution process is:

		'opposites attract'
		'like dissolves like'
		'water dissolves everything'
		'when in doubt, stir it about'

3 points   

QUESTION 4

For most liquid solutions, what effect will raising the temperature have on the solubility of the solute?

		Solubility of the solute will increase.
		Solubility of the solute will decrease.
		Solubility of the solute will not be changed.
		Solutions will all reach maximum solubility at 100 °C.

3 points   

QUESTION 5

If two solutions have the same solvent, concentration, pressure, temperature, and molecular polarity, then:

		The solubility of the two solutions are identical as well.
		The solution with the smaller particle size is generally more soluble.
		The identities of the solutes are not relevant.
		Their solubility will remain the same under all conditions.

3 points   

QUESTION 6

Match each example to the type of solution.

-       A.       B.       C.	supersaturated solution
-       A.       B.       C.	unsaturated solution
-       A.       B.       C.	saturated solution

A.	The percentage of salt in ocean water.
B.	An Dissolving 37 grams of sodium chloride in 100 grams of water, at 25 degrees Celsius, when the maximum sodium chloride soluble at that temperature is 37 grams.
C.	Carbon dioxide dissolved in a can of soda.

3 points   

QUESTION 7

When the compound, Ba(C₂H₃O₂)₂, is mixed with water, the Ba(C₂H₃O₂)₂ is:

		soluble because compounds containing the C2H3O2− ion are soluble in water
		insoluble because most compounds containing the C2H3O2− ion are insoluble in water
		soluble because all Ba+2 compounds are soluble in water
		insoluble because no Ba+2 are soluble in water

3 points   

QUESTION 8

When the compound, KOH, is mixed with water, the KOH is:

		insoluble because all OH− compounds are insoluble in water
		soluble because most OH− compounds are soluble in water
		insoluble because most K+ compounds are insoluble in water
		soluble because KOH is an exception to the insoluble OH− general rule

3 points   

QUESTION 9

In the reaction between NaNO₃ (aq) and Li₂SO₄ (aq), will a precipitate form?

		No. This reaction produces no insoluble products.
		Yes. Na2SO4 will precipitate.
		Yes. LiNO3 will precipitate.
		Yes. Both Na2SO4 and LiNO3 will precipitate.

3 points   

QUESTION 10

In the double replacement reaction between K₂CO₃ (aq) and NiCl₂ (aq), will a precipitate form?

		No. All products are soluble.
		Yes. The KCl will form a precipitate.
		Yes. The NiCO3 will form a precipitate.
		Yes. Both the KCl and the NiCO3 will form precipitates.

Answer 1

7. When the compound Ba(C2H3O2)2 is mixed with water, Ba(C2H3O2)2 is

- soluble because compounds containing C2H3O2- ion are soluble in water.

8. When compound KOH is mixed with water, the KOH is

- soluble because KOH is an exception to the insoluble OH- general rule.

9. In the reaction between nano3 and Li2SO4 will a precipitate form?

- No, this reaction will produce no insoluble products.

10. In the double displacement reaction between K2CO3 and NiCl2 , will a precipitate form?

- No, all products are soluble.