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A given sample of \( \mathrm{N}_{2} \mathrm{O}_{4} \) in a closed vessel shows \( 20 \% \) dissociation in \( \mathrm{NO}_{2} \) at \( 27^{\circ} \mathrm{C} \) and 760 torr. The sample is now heated upto \( 127^{\circ} \mathrm{C} \) and the analysis of mixture shows \( 60 \% \) dissociation at \( 127^{\circ} \mathrm{C} \).
The total pressure of equilibrium mixture in atm at \( 127^{\circ} \mathrm{C} \) is:
(A) \( 1.78 \mathrm{~atm} \)
(B) \( 2.01 \mathrm{~atm} \)
(C) \( 3.18 \mathrm{~atm} \)
(D) \( 1.33 \mathrm{~atm} \)
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