Jee Main
Thermodynamics
JEE Main 2023 (Online) 1st February Morning Shift
INTEGER+4 / -12023
At \(25^{\circ} \mathrm{C}\), the enthalpy of the following processes are given :
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| \(\mathrm{H_2(g)+O_2(g)}\) | \(\to\) | \(2\mathrm{OH(g)}\) | \(\mathrm{\Delta H^\circ=78~kJ~mol^{-1}}\) |
|---|---|---|---|
| \(\mathrm{H_2(g)+\frac{1}{2}O_2(g)}\) | \(\to\) | \(\mathrm{H_2O(g)}\) | \(\mathrm{\Delta H^\circ=-242~kJ~mol^{-1}}\) |
| \(\mathrm{H_2(g)}\) | \(\to\) | \(\mathrm{2H(g)}\) | \(\mathrm{\Delta H^\circ=436~kJ~mol^{-1}}\) |
| \(\frac{1}{2}\mathrm{O_2(g)}\) | \(\to\) | \(\mathrm{O(g)}\) | \(\mathrm{\Delta H^\circ=249~kJ~mol^{-1}}\) |
What would be the value of X for the following reaction ? _____________ (Nearest integer)
\(\mathrm{H_2O(g)\to H(g)+OH(g)~\Delta H^\circ=X~kJ~mol^{-1}}\)