- Question 01:
Which of the following best describes the action of a catalyst and how a reaction rate is increased when one is present?
- Question 02:
The reaction mechanism below shows the destruction of ozone in the earth's atmosphere.
Step 1: Cl(g) + O3(g) → ClO(g) + O2(g)
Step 2: ClO(g) + O(g) → Cl(g) + O2(g)
Which species is the catalyst, and how can it by identified?
- Question 03:
Which of the following is not a characteristic of a catalyst?
- Question 04:
On the diagram shown below, which of the values are affected by the addition of a catalyst?
- Question 05:
What happens when a catalyst is added to an equilibrium mixture?
- Question 06:
A few drops of sulfuric acid are observed to increase the rate of a reaction between a liquid alcohol and a liquid carboxylic acid, whereas a transition metal catalyst does the same in the case of the production of ammonia gas from nitrogen and hydrogen gases. Which statement best describes these observations?
- Question 07:
Based purely on a set of elementary steps that make up a reaction mechanism, how might one recognize a catalyst?
- Question 08:
When enzymes are used to catalyze substrates in biological reactions, the rate of product formation is often found to ultimately plateau. Which explanation would NOT account for this observation?
- Question 09:
When a reversible reaction is exposed to a catalyst, which statement correctly summarizes the change in the rate of the forward and backward reactions?
- Question 10:
In the following mechanism, what is the catalyst?
A + B → C + D
C + A → B + D