A sealed tube containing an equilibrium mixture of NO2(g) (brown) and N2O4(g) (colorless) is subjected to a variety of temperatures. For the equilibrium reaction shown, the values of the H°rxn and S°rxn are also shown. What is observed in the tube with increasing temperature?
2NO2(g) N2O4(g) H = -58.02 kJ/mol, S=-176.5 J/mol . K
A) At higher temperatures, the gas in the tube has a darker brown color.
B) At higher temperatures, the gas in the tube has a lighter brown color.
C) At higher temperatures, the gas in the tube is colorless.
D) The color does not change with temperature.
E) At higher temperatures, the gas turns green.
Correct Answer:
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