Q.
If in the reaction $N_{2}O_{4} \rightleftharpoons 2NO_{2}$, $x$ is that part of $N_{2}O_{4}$ which dissociates, then the number of molecules at equilibrium will be
A) 1
B) 3
C) $1 + x$
D) $(1 + x)^{2}$
Explanation
(c)
$N_{2}O_{4} \rightleftharpoons 2NO_{2}$
1 0 Before dissociation
$1 - x$ $2x$ After dissociation
Total number of moles at equilibrium
$= 1 - x + 2x = 1 + x$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.