Dinitrogen tetraoxide is a colorless gas that dissociates into nitrogen dioxide,
ID: 1007315 • Letter: D
Question
Dinitrogen tetraoxide is a colorless gas that dissociates into nitrogen dioxide, a reddish brown gas.
An experiment was run to demonstrate that this is a dynamic equilibrium. Starting with a special form of N2O4 where one of the oxygens was isotopically labeled (18O instead of 16O), the system was then allowed to reach equilibrium.
Indicate with Y (yes) or N (no) which of the substances below show that the forward or reverse reactions occur for this chemical system.
A. Yes or No
B. Yes or No
C. Yes or No
D. Yes or No
N2O4 (g) 2 NO2 (g)Explanation / Answer
A. two labbeled oxygen suggests that the reaction has gone forward, then backwards, cominh two NO2 fragments. So it show that backward reaction occurs. answer is N
B. Same reasoning as above. Back reaction: N
C.
NO2 fragment, this means that reaction has gone forward. So answer is Y
D.
No labelled oxygen is there. So that means reaction has gone forward, and then two non labelled fragments have formed N2O4. So it shows reverse reaction: N