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NEET
Exam
NEET
Subject
Chemistry
Chapter
Chemical Equilibrium

NEET · Chemistry · Chemical Equilibrium

What causes the brown color of NO 2 gas to decrease in intensity at...

What causes the brown color of NO2 gas to decrease in intensity at low temperatures?

Options

  1. AThe brown color of NO2 gas is temperature-independent.
  2. BThe forward reaction at low temperatures results in the formation of N2O4, which is colorless.
  3. CThe reverse reaction at low temperatures consumes NO2, causing the color to fade.
  4. DThe brown color becomes more intense at low temperatures.

Correct answer

B. The forward reaction at low temperatures results in the formation of N2O4, which is colorless.

Step-by-step solution

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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