For the net reaction: 2AB + 2C ? A ₂ + 2BC, the following slow first steps have been proposed.

1. 2C + AB ? AC + BC

2. 2AB ? A ₂ + 2B

3. C + AB ? BC + A

4. AB ? A + B

What rate law is predicted by each of these steps? Choose from the list below and enter the four letters in order, (e.g. ABCD or DEAB etc.)

k[A]

k[B]

k[AB]

k[AB][C]

k[A] ²

k[B] ²

k[AB] ²

k[AB] ² [C]

k[AB][C] ²

k[AB] ² [C]

Determine the units of the rate constant for all four reactions listed in the problem above, and enter the correct choices from the list below. Enter 4 letters in order (e.g. ABCD or CBED)

sec ^-1

mole L ^-1 sec ^-1

mole ^-1 L sec ^-1

mole ² L ^-2 sec ^-1

mole ^-2 L ² sec ^-1

None of the above.