Chemistry · 2016
JEE Main · 10 April 2016, Shift 1 · Q35
If 100 mole of H_2 O_2 decompose at 1 bar and 300 K, the work done (kJ) by one mole of O_2( g ) as it expands against 1 bar pressure is: 2 H_2 O_2( l…
If $\displaystyle 100$ mole of $\displaystyle \mathrm{H}_2 \mathrm{O}_2$ decompose at $\displaystyle 1$ bar and $\displaystyle 300$ K, the work done (kJ) by one mole of $\displaystyle \mathrm{O}_2(\mathrm{~g})$ as it expands against $\displaystyle 1$ bar pressure is :
$$\begin{aligned}
& 2 \mathrm{H}_2 \mathrm{O}_2(\mathrm{l}) \rightleftharpoons 2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})+\mathrm{O}_2(\mathrm{~g}) \\
& \left(\mathrm{R}=8.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right)
\end{aligned}
$$
Official answer
(2)
$\displaystyle 124.50$
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JEE Main 2016 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.