Which of the following is not endothermic ?

CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics

Problem

Which of the following is not endothermic ? (1) C+2S⟶CS2\text{C} + 2\text{S} \longrightarrow \text{CS}_2 (2) F2+12O2⟶F2O\text{F}_2 + \frac{1}{2}\text{O}_2 \longrightarrow \text{F}_2\text{O} (3) N2+12O2⟶N2O\text{N}_2 + \frac{1}{2}\text{O}_2 \longrightarrow \text{N}_2\text{O} (4) H2+12O2⟶H2O\text{H}_2 + \frac{1}{2}\text{O}_2 \longrightarrow \text{H}_2\text{O}

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