Question

The chemical reaction from the previous problem is endothermic and requires an energy input 180 kJ/mol. How much energy will be required to produce 1.42 moles of NO?

Answer 1

To produce 1.42 moles of NO, 514.04 kJ of energy is required.

Step-by-step explanation:

The chemical reaction of N2(g) with O2(g) to make 2NO(g) is endothermic and has an enthalpy change of 181 kJ. To calculate the energy required to produce a certain amount of NO, we can use stoichiometry. The ratio between NO and N2 is 1:2, so if we need 1.42 moles of NO, we would need 2.84 moles of N2. For each mole of N2, 181 kJ of energy is required, so for 2.84 moles of N2, the energy required would be 2.84 mol x 181 kJ/mol = 514.04 kJ.