Unit 8 Kinetics & Equilibrium

According to which theory or law is a chemical reaction most likely to occur when two particles with the proper energy and orientation interact with each other?

• atomic theory

• collision theory

• combined gas law

• law of conservation of matter

The equation below represents a reaction between two molecules, X₂ and Z₂. These molecules form an "activated complex," which then forms molecules of the product.

Which diagram represents the most likely orientation of X₂ and Z₂ when the molecules collide with proper energy, producing an activated complex?

• 
• 
• 
• 

A chemical reaction occurs when reactant particles

• are separated by great distances

• have no attractive forces between them

• collide with proper energy and proper orientation

• convert chemical energy into nuclear energy

A chemical reaction is most likely to occur when the colliding particles have the proper

• energy and orientation

• solubility and density

• ionic radii and mass

• atomic radii and volume

As the temperature of a reaction increases, it is expected that the reacting particles collide

• more often and with greater force

• more often and with less force

• less often and with greater force

• less often and with less force

Each interval on the axis labeled "Potential Energy (kJ/mol)" represents 10. kJ/mol. What is the activation energy of the forward reaction?

• 10. kJ/mol

• 30. kJ/mol

• 40. kJ/mol

• 60. kJ/mol

The activation energy for the reverse reaction is represented by

• A + B

• B + C

• B + D

• C + D

Which information about a chemical reaction is provided by a potential energy diagram?

• the oxidation states of the reactants and products

• the average kinetic energy of the reactants and products

• the change in solubility of the reacting substances

• the energy released or absorbed during the reaction

Which lettered interval on the diagram represents the potential energy of the products?

• A

• B

• C

• D

Which arrow represents the potential energy of the reactants?

• A

• B

• C

• D