Chemical Kinetics

Which of the following plots will show a linear relationship for a second order reaction?

• [A] vs time

• ¹/_[A] vs time

• ln[A] vs time

• [A]² vs time

The iodide ion reacts with hypochlorite ion in the following way:

OCl^- + I^- ⟶ OI^- + Cl^-.

This rapid reaction gives the rate data shown. What is the rate law?

• rate = [OCl^-]²[I^-]

• rate = [OCl^-][I^-]²

• rate = [OCl^-][I^-]

• rate = [OCl^-]

The following data were measured for the reaction

BF₃(g) + NH_3(g) ⟶ F₃BNH_3(g)

What is the rate law for the reaction?

• rate = k[NH₃]

• rate = k[BF₃]²[NH₃]

• rate = k[BF₃][NH₃]

• rate = k[BF₃][NH₃]²

The following data were measured for the reaction

BF_3(g) + NH_3(g) ⟶ F₃BNH_3(g)

What is the rate when [BF₃] = 0.100 M and [NH₃] = 0.500 M ?

• .01704 M/s

• .0852 M/s

• .1704 M/s

• .852 M/s

What letter represents the activation energy?

• A

• B

• C

• D

Which of the two graphs show a state of equilibrium being reached?

• A

• B

• A and B

• Neither.

Which of the following best describes why increasing temperature increase reaction rate?

• Activation energy is reduced.

• Collisions become more frequent.

• Collisions become more energetic.

• Collisions become more frequent and more energetic.

What is the rate law for this mechanism?

• rate = k[A][B]²

• rate = [B][X]

• rate = [A]^0.5[B]^1.5

• rate = [W][Y][Z]

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing surface area

• all of the above

State the order for the reaction.

• zero
• 1st
• 2nd
• 3rd