To carry out the reaction N 2 + 2O 2 $\to$ 2NO 2 requires 67.7 kJ.
To carry out the reaction N 2 + 2O 2 $\to$N 2 O 4 requires 9.7 kJ.
Consider the reaction 2NO 2 $\to$ N 2 O 4 .
-Is the reaction endothermic or exothermic?

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The Answer of To carry out the reaction N 2 + 2O 2 $\to$ 2NO 2 requires 67.7 kJ.
To carry out the reaction N 2 + 2O 2 $\to$N 2 O 4 requires 9.7 kJ.
Consider the reaction 2NO 2 $\to$ N 2 O 4 .
-Is the reaction endothermic or exothermic?

To Carry Out the Reaction N2 + 2O2 →\to→ 2NO2 Requires 67

To Carry Out the Reaction N₂ + 2O₂ $\to$ 2NO₂ Requires 67