Choose the reaction(s) from the following options, for which the standard enthalpy of reaction is equal to…

1. $\frac{3}{2}{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{O}}_3\left(\mathrm{g}\right)$
2. $\frac{1}{8}{\mathrm{S}}_8\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to \mathrm{S}{\mathrm{O}}_2\left(\mathrm{g}\right)$
3. $2{\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to 2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$
4. $2\mathrm{C}\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right)\to {\mathrm{C}}_2{\mathrm{H}}_6\left(\mathrm{g}\right)$

Solution

Asked in: JEE Advanced 2019 (Paper 1)

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