Q.For the reaction $N_2(g) + 3H_2(g) → 2NH_3(g)$ , $ΔH = -92.4 \text{ kJ}$ . What is the standard enthalpy of formation of $NH_3(g)$ ?

-92.4 \text{ kJ/mol}

-46.2 \text{ kJ/mol}

+46.2 \text{ kJ/mol}

-184.8 \text{ kJ/mol}

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Q.For the reaction N2(g)+3H2(g)→2NH3(g)N_2(g) + 3H_2(g) → 2NH_3(g)N2​(g)+3H2​(g)→2NH3​(g), ΔH=−92.4 kJΔH = -92.4 \text{ kJ}ΔH=−92.4 kJ. What is the standard enthalpy of formation of NH3(g)NH_3(g)NH3​(g)?