AP EAMCET · Chemistry · Chemical Equilibrium
At \(400 \mathrm{~K}\), in a \(1.0 \mathrm{~L}\) vessel, \(\mathrm{N}_2 \mathrm{O}_4\) is allowed to attain equilibrium, \(\mathrm{N}_2 \mathrm{O}_4(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_2(\mathrm{~g})\) At equilibrium, the total pressure is \(600 \mathrm{~mm} \mathrm{Hg}\), when \(20 \%\) of \(\mathrm{N}_2 \mathrm{O}_4\) is dissociated. The value of \(K_n\) for the reaction is
- A 50
- B 100
- C 150
- D 200
Answer & Solution
Correct Answer
(B) 100
Step-by-step Solution
Detailed explanation
\(\begin{array}{lcc}\text { } & \mathrm{N}_2 \mathrm{O}_4 \rightleftharpoons 2 \mathrm{NO}_2 \\ \text { Initial moles } & 1 & 0 \\ \text { At equilibrium } & (1-0.2) & 2 \times 0.2=0.8 \\ \text { Total moles }=0.4+0.8=12\end{array}\)…
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