Which reaction is endothermic?

H2 (g) + ½ O2 (g) → H2O (g), ΔH = - 57.82 kcal

½N2 (g) + O2 (g) + 8.1 kcal → NO2 (g)

½N2 (g) + 3/2H2 (g) → NH3 (g) + 11.0 kcal

C (diamond) + O2 (g) → CO2, ΔH = - 94.50 kcal

Question

Chemistry

Quintin

18 June, 03:11

Which reaction is endothermic?

H2 (g) + ½ O2 (g) → H2O (g), ΔH = - 57.82 kcal

½N2 (g) + O2 (g) + 8.1 kcal → NO2 (g)

½N2 (g) + 3/2H2 (g) → NH3 (g) + 11.0 kcal

C (diamond) + O2 (g) → CO2, ΔH = - 94.50 kcal

+5

Answers (1)

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Albert Wallace · Answer 1

The second equation is endothermic. the energy is listed in the reactants side. if it was a product it is exothermic. also the H value is negative exothermic positive endothermic

Which reaction is endothermic?H2 (g) + ½ O2 (g) → H2O (g), ΔH = - 57.82 kcal½N2 (g) + O2 (g) + 8.1 kcal → NO2 (g)½N2 (g) + 3/2H2 (g) → NH3 (g) + 11.0 kcalC (diamond) + O2 (g) → CO2, ΔH = - 94.50 kcal

Which reaction is endothermic?

H2 (g) + ½ O2 (g) → H2O (g), ΔH = - 57.82 kcal

½N2 (g) + O2 (g) + 8.1 kcal → NO2 (g)

½N2 (g) + 3/2H2 (g) → NH3 (g) + 11.0 kcal

C (diamond) + O2 (g) → CO2, ΔH = - 94.50 kcal