JEE Main 2026 · 8 Apr · Shift 2, Chemistry question 74

Consider the reaction

$\ce{2H2S(g) + 3O2(g) -> 2H2O(l) + 2SO2(g)}$

The magnitude of enthalpy change for the reaction in kJ mol$^{-1}$ is ________. (Nearest integer)

Given : $\Delta_fH^\ominus(\ce{H2S})=-20.1$ kJ mol$^{-1}$, $\Delta_fH^\ominus(\ce{H2O})=-286.0$ kJ mol$^{-1}$, $\Delta_fH^\ominus(\ce{SO2})=-297.0$ kJ mol$^{-1}$