Chemistry Ch16&17 Exam

90 Questions | By Bakerph1 | Last updated: Jun 2, 2015 | Total Attempts: 264

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1.

For a process, the enthalpy change of a system is 1.25 x 10⁵ J and the entropy change is 300.0 J/K. Calculate the free energy change of the system at 290 K.
- A.
  
  9.2x10⁵ J
- B.
  
  3.8x10⁴ J
- C.
  
  1.03x10⁶ J
- D.
  
  1.1x10⁵ J
2.

For a process, the enthalpy change and the entropy change of the system is 173000 J and its entropy change is 210 J/K. Calculate the free energy change of the system at 298 K.
- A.
  
  9.2x10⁵ J
- B.
  
  3.8x10⁴ J
- C.
  
  1.03x10⁶ J
- D.
  
  1.1x10⁵ J
3.

Rice contains 245 nutritional Calories. Calculate the energy in joules.
- A.
  
  9.2x10⁵ J
- B.
  
  3.8x10⁴ J
- C.
  
  1.03x10⁶ J
- D.
  
  1.1x10⁵ J
4.

A burger contains 220 nutritional Calories. Convert this energy into joules.
- A.
  
  9.2x10⁵ J
- B.
  
  3.8x10⁴ J
- C.
  
  1.03x10⁶ J
- D.
  
  1.1x10⁵ J
5.

A(n) ____________________ is a balanced chemical equation that includes the physical states of all reactants and products and the energy change that accompanies the reaction.
- A.
  
  Thermochemical equation
- B.
  
  Enthalpy of combustion
- C.
  
  Molar enthalpy of vaporization
- D.
  
  Molar enthalpy of fusion
6.

The conversion of a gas to a liquid involves the ____________________.
- A.
  
  Thermochemical equation
- B.
  
  Enthalpy of combustion
- C.
  
  Molar enthalpy of vaporization
- D.
  
  Molar enthalpy of fusion
7.
- A.
  
  Thermochemical equation
- B.
  
  Enthalpy of combustion
- C.
  
  Molar enthalpy of vaporization
- D.
  
  Molar enthalpy of fusion
8.

Converting two moles of a liquid to a solid requires an amount of energy that is twice the ____________________.
- A.
  
  Thermochemical equation
- B.
  
  Enthalpy of combustion
- C.
  
  Molar enthalpy of vaporization
- D.
  
  Molar enthalpy of fusion
9.

The ____________________ is the heat required to melt one mole of a solid substance.
- A.
  
  Thermochemical equation
- B.
  
  Enthalpy of combustion
- C.
  
  Molar enthalpy of vaporization
- D.
  
  Molar enthalpy of fusion
10.

The ____________________ is the heat required to vaporize one mole of a liquid.
- A.
  
  Thermochemical equation
- B.
  
  Enthalpy of combustion
- C.
  
  Molar enthalpy of vaporization
- D.
  
  Molar enthalpy of fusion
11.

The enthalpy change for the complete burning of one mole of a substance is the ____________________.
- A.
  
  Thermochemical equation
- B.
  
  Enthalpy of combustion
- C.
  
  Molar enthalpy of vaporization
- D.
  
  Molar enthalpy of fusion
12.

When a gas condenses to a liquid, heat is ____________________ to the surroundings
- A.
  
  Cool
- B.
  
  Released
- C.
  
  Absorbs
- D.
  
  Heat
13.
- A.
  
  Cool
- B.
  
  Released
- C.
  
  Absorbs
- D.
  
  Heat
14.

If it takes 100 joules to melt a piece of ice, ____________________ must be absorbed by the ice.
- A.
  
  Cool
- B.
  
  Released
- C.
  
  Absorbs
- D.
  
  Heat
15.

If you put an ice cube in a glass of soda pop, the heat absorbed by the ice will cause the ice to melt, and the soda pop will become ____________________.
- A.
  
  Cool
- B.
  
  Released
- C.
  
  Absorbs
- D.
  
  Heat
16.

Sweating makes you feel cooler because, as it evaporates, the water on your skin ____________________ heat from your body.
- A.
  
  Cool
- B.
  
  Released
- C.
  
  Absorbs
- D.
  
  Heat
17.

A(n) ____________________ is a physical or chemical change that occurs with no outside intervention.
- A.
  
  Spontaneous process
- B.
  
  Law of disorder
- C.
  
  Entropy
- D.
  
  Free energy
18.

____________________ is the energy that is available to do work
- A.
  
  Spontaneous process
- B.
  
  Law of disorder
- C.
  
  Entropy
- D.
  
  Free energy
19.

The ____________________ states that spontaneous processes always proceed in such a way that the entropy of the universe increases.
- A.
  
  Spontaneous process
- B.
  
  Law of disorder
- C.
  
  Entropy
- D.
  
  Free energy
20.

A measure of disorder or randomness of the particles that make up a system is called ____________________.
- A.
  
  Spontaneous process
- B.
  
  Law of disorder
- C.
  
  Entropy
- D.
  
  Free energy
21.

Energy exits in two basic forms, ____________________ and ____________________ energy
- A.
  
  Potential / kinetic
- B.
  
  Exothermic / endothermic
- C.
  
  Chemical
- D.
  
  Universe
- E.
  
  Standard
- F.
  
  Same
22.

The ____________________ enthalpy of formation is defined as the change in enthalpy that accompanies the formation of one mole of the compound in its standard state from its constituent elements in their standard states.
- A.
  
  Potential / kinetic
- B.
  
  Exothermic / endothermic
- C.
  
  Chemical
- D.
  
  Universe
- E.
  
  Standard
- F.
  
  Same
23.

The ____________________ is defined as the system along with the surroundings.
- A.
  
  Potential / kinetic
- B.
  
  Exothermic / endothermic
- C.
  
  Chemical
- D.
  
  Universe
- E.
  
  Standard
- F.
  
  Same
24.

The energy stored in a substance due to its composition is called ____________________ potential energy.
- A.
  
  Potential / kinetic
- B.
  
  Exothermic / endothermic
- C.
  
  Chemical
- D.
  
  Universe
- E.
  
  Standard
- F.
  
  Same
25.

The molar enthalpies of condensation and vaporization have the ____________________ numerical value
- A.
  
  Potential / kinetic
- B.
  
  Exothermic / endothermic
- C.
  
  Chemical
- D.
  
  Universe
- E.
  
  Standard
- F.
  
  Same