A Proposed Mechanism for the Reduction of Nitrogen as NO $\to$

question 93

Multiple Choice

A proposed mechanism for the reduction of nitrogen as NO by hydrogen is: Step 1: H₂(g) + 2 NO(g) $\to$ N₂O(g) + H₂O(g) (slow)
Step 2: N₂O(g) + H₂(g) $\to$ N₂(g) + H₂O(g) (fast)
Which of the following statements is NOT true?

• A)The energy profile for this reaction probably has two maxima.
• B)The reaction rate is probably second order in NO.
• C)The reaction rate is probably first order in H₂.
• D)N₂O is an intermediate.
• E)The activation energy for step 2 is probably less than that of step 1.

---

Definitions:

Pseudomonas Aeruginosa

A species of gram-negative, aerobic, rod-shaped bacteria associated with opportunistic infections, notably resistant to antibiotics and capable of biofilm formation.

Liverwort

A type of small, non-vascular plant from the Marchantiophyta class, often found in moist habitats.

Isoprene Rule

A rule stating that terpenes are assembled from isoprene units, reflected in their structure.

Isoprene

A simple hydrocarbon compound that serves as the monomer for natural rubber and is used in the synthesis of various polymers.