Which of the following statements about the rate-determining step are correct?
I and II only
I and III only
II and III only
I, II and III
The rate information below was obtained for the following reaction at a constant temperature:
A + 2B → C + 2D
|
Experiment |
Initial [A] |
Initial [B] |
Initial rate |
|
1 |
0.25 |
0.25 |
3.5 x 10-4 |
|
2 |
0.25 |
0.50 |
To be calculated |
The rate equation for this reaction is rate = k [B]
What is the initial rate of reaction for experiment 2, in mol dm–3 s–1?
(4 x 3.5 x 10-4)
(2 x 3.5 x 10-4)
3.5 x 10-4
(0.5 x 3.5 x 10-4)
The rate equation for the reaction between A and B is:
Rate = k [A] [B]
What are the correct units for the rate constant of this rate equation?
mol-1 dm3 s-1
mol−2 dm6 s−1
mol2 dm−6 s−1
mol dm-3 s-1
The rate information below was obtained for the following reaction at a constant temperature:
5Br– (aq) + BrO3– (aq) + 6H+ (aq) → 3Br2 (aq) + 3H2O (l)
What is the order of reaction with respect to [H+]?
One
Two
Six
Zero
The mechanism for the following reaction between nitrogen(II) oxide and carbon monoxide is shown.
NO2 (g) + CO (g) → NO (g) + CO2 (g)
Step 1: NO2 + NO2 → NO3 + NO slow step
Step 2: NO3 + CO → NO2 + CO2 fast step
What rate expression is consistent with the mechanism?
Rate = k [NO2] [CO]
Rate = k [NO3] [CO]
Rate = k [NO2]2
Rate = k [NO2]
