Multiple Choice
Which statement best defines the rate-determining step in a chemical reaction mechanism?
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15. Chemical Kinetics
Reaction Mechanism
Back15. Chemical Kinetics
Reaction Mechanism
- Multiple ChoiceGiven the following three elementary steps:1) NO_2 + CO → NO + CO_22) NO_2 + NO → NO_3 + NO3) NO_3 + CO → NO_2 + CO_2What is the overall reaction that results from these steps?25views
- Multiple ChoiceWhat is the most likely mechanism for the reaction of 2-bromo-2-methylpropane with hydroxide ion to form 2-methyl-2-propanol?36views
- Multiple ChoiceWhich of the following statements concerning a possible mechanism for a reaction is false?24views
- Multiple ChoiceIf the reaction x + 2 y → xy₂ occurs by the proposed mechanism, which of the following could be the rate law for this reaction?25views
- Multiple ChoiceIn a proposed reaction mechanism, the rate-determining step involves the collision of two reactant molecules: NO and O2. What is the molecularity of the rate-determining step?20views
- Multiple ChoiceIf the uncatalyzed reaction occurs in a single elementary step, which of the following statements is true?26views
- Multiple ChoiceFor the following reaction mechanism:Step 1: NO_2 + CO → NO + CO_2 (slow)Step 2: NO + NO_2 → N_2O_2 (fast)Which of the following best describes the rate law for the overall reaction?21views
- Multiple ChoiceWhich of the following elementary reactions has a molecularity of three?27views
- Multiple ChoiceAn elementary reaction is known to be bimolecular. What does this mean?50views
- Multiple ChoiceWhich of the following statements about reaction mechanisms is false?26views
- Multiple ChoiceA reaction has the following overall equation: 2 NO_2(g) + F_2(g) → 2 NO_2F(g). Experimental data show that the rate law is rate = k[NO_2][F_2]. Based on this information, how many elementary steps are most likely involved in the reaction mechanism?22views
- Multiple ChoiceWhich of the following reaction mechanisms is most consistent with an energy diagram that shows two distinct activation energy peaks separated by an intermediate energy valley?37views
- Multiple Choice
Consider the following elementary steps:
NO2 (g) + NO2 (g) → NO3 (g) + NO (g) [SLOW]
NO (g) + CO3 (g) → N (g) + CO4 (g) [FAST]
What is the rate law of the reaction mechanism?
1927views8rank2comments - Multiple Choice
The following reaction of 2 Br2 (g) + 2 NO (g) → N2 (g) + 2 Br2O (g) has the following rate law:Rate = k [Br2][NO]2. The proposed mechanism for the reaction is:
Br2 (g) + NO2 (g) → N (g) + Br2O (g) [SLOW]
N (g) + NO (g) → N2 (g) + O (g) [FAST]
O (g) + Br2 (g) → Br2O (g) [FAST]Which of the following statements is/are false?
a) The rate determining step is bimolecular.
b) There are three elementary steps in the reaction mechanism.
c) The mechanism possesses a catalyst.
d) O is the only reaction intermediate in this reaction mechanism.
e) This is not a valid mechanism for the reaction.1537views3rank