Question

Nitric oxide can be oxidized in air to form nitrogen dioxide. At normal atmospheric concentrations this is a very slow process.

2 NO(g) + O2(g) → 2 NO2(g) + 232.4 kJ


Nitrogen dioxide is more commonly formed as a byproduct of vehicle exhaust and it contributes to acid deposition.


The equation indicates that the reaction


A. is exothermic

B. is endothermic

C. is absorbing energy

D. products have more energy than do the reactants

Answer 1

exothermic

Step-by-step explanation:

This is an exothermic reaction because you can see the 232.4 kJ at the end of the reaction. That means that 232.4 kilo-joules are released when the reaction happens; when energy is released during a reaction, the reaction is exothermic.

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