CHY 102 Lecture Notes - Lecture 10: Intermolecular Force, Litmus, Pennsylvania Route 34

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19 Oct 2015

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Solvent: any substance that has other substances dissolved in it- represents the largest amount in a solution. Solute: a substance that is dissolved in a solution. Solution: a homologous mixture of a solvent and one or more solute. Saturated solution: a solution in which no more of a particular solute can be dissolved at a specific temperature. Unsaturated solution: a solution in which more of a particular solute can be dissolved at a specific temperature. Concentration: the ratio of the amount of solute per quantity of solvent. Dipole to dipole attraction: the intermolecular force between oppositely charged ends if two polar molecules. Miscible: solutions that is able to combine with one another at any proportion. Immiscible: liquids that do not readily dissolve, ex water and oil. Aqueous solution: solution in which water is the solvent. Particle attraction: polarity: dipole to dipole attraction (pg.

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Questions: THANK YOU IN ADVANCE

1. WHAT IS THE TERM FOR THE CONCENTRATION EXPRESSION THAT RELATES THE MOLES OF SOLUTE DISSOLVED IN EACH LITER OF SOLUTION?

A. MOLARITY

B. MASS/MASS PERCENT

C. MOLALITY

D. PARTS PER MILLION

E. NONE OF THESE

2. WHAT IS THE TERM FOR A SOLUTION CONTAINING THE MAXIMUM SOLUTE THAT CAN DISSOLVE AT A GIVEN TEMPERATURE?

A. SATURATED

B. SUPERSATURATED

C. UNSATURATED

D. CONCENTRATED

E. NONE OF ABOVE

3. WHICH OF THE FOLLOWING ILLUSTRATES THE LIKE DISSOLVES LIKE RULE FOR TWO LIQUIDS?

A. a POLAR SOLUTE IS MISCIBLE W A NONPOLAR SOLVENT

B. A NONPOLAR SOLVENT IS MISCIBLE WITH A POLAR SOLVENT

C. A POLAR SOLUTE IS IMMISCIBLE WITH A POLAR SOLVENT

D. A NONPOLAR SOLUTE IS MISCIBLE WITH A NONPOLAR SOLVENT

E. NONE OF ABOVE

4. APPLY THE LIKE DISSOLVES LIKE RULE TO PREDICT WHICH OF THE FOLLOWING LIQUIDS IS MISCIBLE WITH WATER

A. ETHANOL, C2H5OH

B. TOLUENE, C7H8

C. CARBON TETRACHLORIDE, CCL4

D. ALL OF THESE

E. NONE OF THESE

5. WHICH OF THE FOLLOWING INCREASES THE RATE OF DISSOLVING FOR A SOLID SOLUTE IN A SOLVENT?

A. HEATING THE SOLUTION

B. GRINDING THE SOLUTE

C. STIRRING THE SOLUTION

D. ALL OF THE ABOVE

E. NONE OF THE ABOVE

6. WHAT IS THE MASS OF SOLUTE DISSOLVED IN 10.0 G OF A 5.00% SUGAR SOLUTION?

A. 0.900g

B 9.50 g

C 0.500g

D 0.180 g

E 10.0 g

THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!

- Which of the following properly describes a colligative property of a solution?
A) a solution property that depends on the identity of the solute particles present
B) a solution property that depends on the electrical charges of the solute particles present
C) a solution property that depends on the amount of solute particles present
D) a solution property that depends on the pressure of the solute particles present
E) a solution property that depends on the amount, identity, and pressure of the solute particles present

- Which statement best explains the meaning of the phrase "like dissolves like"?
A. The only true solutions are formed when water dissolves a polar solute.
B. The only true solutions are formed when water dissolves a non-polar solute.
C. A solvent and solute with similar intermolecular forces will readily form a solution. D. A solvent will easily dissolve a solute of similar mass.

E. None of these statements is correct.

- The solubility of gases in liquids
A. increases as temperature increases and decreases as pressure increases

B. increases as temperature increases and increases as pressure increases

C. is independent of temperature and increases as pressure increases
D. decreases as temperature increases and increases as pressure increases

E. decreases as temperature increases and decreases as pressure increases

CHY 102 Lecture Notes - Lecture 10: Intermolecular Force, Litmus, Pennsylvania Route 34

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