Chemistry · 2022
JEE Main · 25 June 2022, Shift 2 · Q62
At 25^° C and 1 atm pressure, the enthalpy of combustion of benzene (l) and acetylene (g) are -3268 kJ mol^-1 and -1300 kJ mol^-1, respectively. The…
At $\displaystyle 25^{\circ} \mathrm{C}$ and $\displaystyle 1$ atm pressure, the enthalpy of combustion of benzene (l) and acetylene (g) are $\displaystyle -3268 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and $\displaystyle -1300 \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. The change in enthalpy for the reaction $\displaystyle 3 \mathrm{C}_2 \mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{C}_6 \mathrm{H}_6(\mathrm{l})$, is
Official answer
(3)
$\displaystyle -632 \mathrm{~kJ} \mathrm{~mol}^{-1}$
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JEE Main 2022 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.