Consider the General Gas-Phase Reaction of a Molecular Substance, A

question 17

Essay

Consider the general gas-phase reaction of a molecular substance, A:
1. At very low pressures many such reactions occur by the following mechanism:
2. 3. (A* represents a molecule with sufficient energy to overcome the activation energy barrier.)
A) Which of the three reactions above is/are elementary?
B) Where appropriate, identify the molecularity of the reactions.
C) Show that the proposed mechanism is consistent with reaction 1, the observed reaction.
D) Given the mechanism above, suggest a likely rate law for reaction (1).

• A) Which of the three reactions above is/are elementary?
• B) Where appropriate, identify the molecularity of the reactions.
• C) Show that the proposed mechanism is consistent with reaction 1, the observed reaction.
• D) Given the mechanism above, suggest a likely rate law for reaction (1).

---

Definitions:

Accounts Payable

Liabilities to creditors for goods or services purchased on credit, representing obligations that a company needs to pay off in the near term.

Interest Expense

The cost incurred by an entity for borrowed funds, recognized as an expense in the income statement over the period the funds are borrowed.

Unearned Revenue

Money received by a company for services or products which have not yet been delivered or performed.

Advance Subscription Sales

Revenue received from customers for subscriptions that are paid for before the subscription period begins.