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Question: Answered & Verified by Expert
What causes the brown color of NO2 gas to decrease in intensity at low temperatures?
ChemistryChemical EquilibriumNEET
Options:
  • A The brown color of NO2 gas is temperature-independent.
  • B The forward reaction at low temperatures results in the formation of N2O4, which is colorless.
  • C The reverse reaction at low temperatures consumes NO2, causing the color to fade.
  • D The brown color becomes more intense at low temperatures.
Solution:
1807 Upvotes Verified Answer
The correct answer is: The forward reaction at low temperatures results in the formation of N2O4, which is colorless.
At low temperatures, the forward reaction of forming N2O4 occurs, which is colorless, leading to a decrease in the intensity of the brown color of NO2 gas.

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