Chemistry · 2023
JEE Main · 31 January 2023, Shift 2 · Q54
Enthalpies of formation of CCl_4( g ), H_2 O ( g ), CO_2( g ) and HCl ( g ) are -105,-242,-394 and -92 kJ mol^-1 respectively. The magnitude of…
Enthalpies of formation of $\displaystyle \mathrm{CCl}_4(\mathrm{~g}), \mathrm{H}_2 \mathrm{O}(\mathrm{g}), \mathrm{CO}_2(\mathrm{~g})$ and $\displaystyle \mathrm{HCl}(\mathrm{g})$ are $\displaystyle -105,-242,-394$ and -$\displaystyle 92$ kJ $\displaystyle \mathrm{mol}^{-1}$ respectively. The magnitude of enthalpy of the reaction given below is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{kJ} \mathrm{mol}^{-1}$. (nearest integer)
$$\mathrm{CCl}_4(\mathrm{~g})+2 \mathrm{H}_2 \mathrm{O}(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})+4 \mathrm{HCl}(\mathrm{~g})
$$
Official answer
From NTA’s final answer key for this paper.
173
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JEE Main 2023 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.