The brown color associated with photochemical smog is due to NO₂(g) ,which is involved in an equilibrium with N₂O₄(g) in the atmosphere. 2 NO₂(g) ⇌ N₂O₄(g)
Predict the signs of the enthalpy and entropy change for the forward reaction.

Question

Quizplus · Accepted Answer

The forward reaction involves the combination of two moles of NO2 to form one mole of N2O4, which suggests a decrease in entropy (negative entropy change). The formation of a bond in N2O4 from NO2 typically releases energy, indicating an exothermic reaction (negative enthalpy change).

The Brown Color Associated with Photochemical Smog Is Due to NO2(g),which

The Brown Color Associated with Photochemical Smog Is Due to NO₂(g),which