Chemistry 102 Quiz

What is the study of the Rates of Chemical Reactions known as?

• Atomic Structure

• Thermodynamics

• Chemical Kinetics

• Chemical Equilibrium

What is the expression for the Rate Law of a first-order reaction?

• Rate = k[A]

• Rate = k[A]^0.5

• Rate = k[A]^2

• Rate = k[A]^3

What is the half-life of a first-order reaction dependent on?

• Initial concentration

• Pressure

• Temperature

• Presence of a catalyst

In a second-order reaction, what is the relationship between time and concentration?

• Linear

• Exponential

• Parabolic

• Logarithmic

What is the integrated rate law for a second-order reaction?

• 1/A = kt + 1/A0

• ln[A] = -kt

• 1/[A] = kt + 1/[A]0

• log[A] = kt + log[A]0

How is the order of a reaction determined graphically?

• By plotting 1/[A] vs. time

• By plotting [A]^2 vs. time

• By plotting log[A] vs. time

• By plotting [A] vs. time

What is the half-life of a second-order reaction proportional to?

• Initial concentration

• Volume of the container

• Rate constant

• Temperature

What is the Rate Law expression for a second-order reaction?

• Rate = k

• Rate = k[A]^0.5

• Rate = k[A]

• Rate = k[A]^2

What is the purpose of a catalyst in a chemical reaction?

• To change the stoichiometry of the reaction

• To slow down the reaction rate

• To increase the activation energy

• To speed up the reaction rate without being consumed

What is the difference between homogeneous and heterogeneous catalysis?

• Homogeneous catalysis involves a catalyst in the same phase as the reactants, while heterogeneous catalysis involves a catalyst in a different phase from the reactants

• Homogeneous catalysis involves a catalyst in a different phase from the reactants, while heterogeneous catalysis involves a catalyst in the same phase as the reactants

• Homogeneous catalysis involves physical adsorption, while heterogeneous catalysis involves chemisorption

• Homogeneous catalysis involves chemisorption, while heterogeneous catalysis involves physical adsorption