Which of the following reactions is endothermic?

H2(g) + ½ O2(g)H2O(g),H = -57.82 kcal
½N2(g) + O2(g) + 8.1 kcalNO2(g)
½ N2(g) + 3/2 H2(g)NH3(g) + 11.0 kcal
C(diamond)+ O2(g)CO2,H = -94.50 kcal

The best and most correct answer among the choices provided by your question is the second choice.

The reaction ½N2(g) + O2(g) + 8.1 kcalNO2(g) is endothermic among .the given choices.

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Which of the following reactions is endothermic? H2(g) + ½ O2(g)H2O(g),H = -57.82 kcal ½N2(g) + O2(g) + 8.1 kcalNO2(g) ½ N2(g) + 3/2 H2(g)NH3(g) + 11.0 kcal C(diamond)+ O2(g)CO2,H = -94.50 kcal

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Which of the following reactions is endothermic?

H2(g) + ½ O2(g)H2O(g),H = -57.82 kcal
½N2(g) + O2(g) + 8.1 kcalNO2(g)
½ N2(g) + 3/2 H2(g)NH3(g) + 11.0 kcal
C(diamond)+ O2(g)CO2,H = -94.50 kcal