,1. Multiple Choice: What is the primary factor that determines the
spontaneity of a reaction?
A) Enthalpy
B) Entropy
C) Free Energy
D) Activation Energy
Correct Answer: C) Free Energy
Rationale: The spontaneity of a chemical reaction is primarily
determined by the change in free energy, according to Gibbs free
energy equation.
2. Fill-in-the-Blank: The ________ states that the rate of a chemical
reaction is proportional to the product of the concentrations of the
reactants.
Correct Answer: Rate Law
Rationale: The rate law expresses the relationship of the reaction
rate with the concentration of reactants.
3. True/False: The transition state of a chemical reaction is the
same as the activated complex.
Correct Answer: True
, Rationale: The transition state, also known as the activated
complex, is the highest energy state in the reaction pathway.
4. Multiple Response: Which of the following are colligative
properties of a solution? (Select all that apply)
A) Vapor Pressure Lowering
B) Boiling Point Elevation
C) Viscosity
D) Freezing Point Depression
Correct Answers: A) Vapor Pressure Lowering, B) Boiling
Point Elevation, D) Freezing Point Depression
Rationale: Colligative properties depend on the number of
particles in a solution, and include vapor pressure lowering, boiling
point elevation, and freezing point depression, but not viscosity.
5. Multiple Choice: In a redox reaction, the substance that gains
electrons is called the:
A) Oxidizing agent
B) Reducing agent
C) Catalyst
D) Electrolyte
Correct Answer: A) Oxidizing agent
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