Rate equations and kP 1

The total area under the distribution curve represents

•  total energy.

•  activation energy.

• total number of reacting molecules.

• total number of molecules present.

The Maxwell–Boltzmann distribution of molecular energies in a sample of gas at a fixed temperature is shown.

Which letter represents the mean energy of the molecules?

• A

• B

• C

• D

Rate = k [A]² [B]

Correct units for the rate constant in the rate equation above are

• mol dm⁻³ s⁻¹

• mol⁻¹ dm⁻³ s⁻¹

• mol² dm⁻⁶ s⁻¹

•   mol⁻² dm⁶ s⁻¹

What is the order with respect to [A]?

• 0

• 1

• 2

• 3

What is the order with respect to [B]?

• 0

• 1

• 2

• 3

What is the order with respect to [A]?

• 0

• 1

• 2

• 3

What is the overall order for this reaction?

• 0

• 1

• 2

• 3

What is the order with respect to [B]?

• 0

• 1

• 2

• 3

What is the order with respect to [C]?

• 0

• 1

• 2

• 3

What is the overall order?

• 1

• 2

• 3

• 4