Chemistry · 2015
JEE Main · 10 April 2015, Shift 1 · Q39
The reaction 2 N_2 O_5( g ) → 4 NO_2( g )+ O_2( g ) follows first order kinetics. The pressure of a vessel containing only N_2 O_5 was found to…
The reaction
$$2 \mathrm{~N}_2 \mathrm{O}_5(\mathrm{~g}) \rightarrow 4 \mathrm{NO}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g})
$$
follows first order kinetics. The pressure of a vessel containing only $\displaystyle \mathrm{N}_2 \mathrm{O}_5$ was found to increase from $\displaystyle 50$ mm Hg to $\displaystyle 87.5$ mm Hg in $\displaystyle 30$ min. The pressure exerted by the gases after $\displaystyle 60$ min. will be (Assume temperature remains constant) :
Official answer
(1)
106.$\displaystyle 25$ mm Hg
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JEE Main 2015 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.