STANDARDChemistry-Chemical Kinetics
STANDARD Chemistry Rate of Reaction MCQ Question
Type: MCQ-conceptual-Medium-Class 12
For the reaction, 2N₂O₅ → 4NO₂ + O₂, the rate of reaction can be expressed in terms of time and concentration by the expression:
A
Rate = -d[N₂O₅]/dt = 1/4 d[NO₂]/dt = 1/2 d[O₂]/dt
B
Rate = -1/2 d[N₂O₅]/dt = -1/4 d[NO₂]/dt = d[O₂]/dt
C
Rate = -1/4 d[N₂O₅]/dt = 1/2 d[NO₂]/dt = d[O₂]/dt
D
Rate = -1/2 d[N₂O₅]/dt = 1/2 d[NO₂]/dt = 1/2 d[O₂]/dt
Correct Answer
Option A
Detailed Explanation
The rate of disappearance of N₂O₅ should be equal to the rate of appearance of NO₂ divided by 4 and the rate of appearance of O₂ divided by 2, according to the stoichiometry of the reaction.
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