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Which of the following reactions shows that the formation of NO2 requires 33.1 kJ/mol?A.N(g) + 2O(g) NO2(g) + 33.1 kJB.N2(g) + O2(g) + 33.1 kJ NO2(g)C.N(g) + O(g) + 33.1 kJ NO2(g)D.N2(g) + O2(g) NO2(g) + 33.1 kJSUBMITarrow_backPREVIOUS

Question

Which of the following reactions shows that the formation of NO2 requires 33.1 kJ/mol?A.N(g) + 2O(g) NO2(g) + 33.1 kJB.N2(g) + O2(g) + 33.1 kJ NO2(g)C.N(g) + O(g) + 33.1 kJ NO2(g)D.N2(g) + O2(g) NO2(g) + 33.1 kJSUBMITarrow_backPREVIOUS

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Solution

The correct answer is B. N2(g) + O2(g) + 33.1 kJ NO2(g). This reaction shows that the formation of NO2 requires 33.1 kJ/mol. The energy is on the reactants side, indicating that it is absorbed in the reaction, which is characteristic of an endothermic process.

Similar Questions

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Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step, nitrogen and hydrogen react to form ammonia:N2(g) + 3H2(g) → 2NH3(g) =ΔH−92.kJIn the second step, ammonia and oxygen react to form nitric oxide and water:4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g) =ΔH−905.kJCalculate the net change in enthalpy for the formation of one mole of nitric oxide from nitrogen, hydrogen and oxygen from these reactions.Round your answer to the nearest kJ.

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