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NEETChemistryGeneral Organic Chemistry

How is nitrogen collected in the Dumas method, and what gas is absorbed to remove it from the mixture?

Options

  1. ACollected over potassium hydroxide solution; carbon dioxide
  2. BCollected over sulfuric acid; carbon dioxide
  3. CCollected over potassium hydroxide solution; oxygen
  4. DCollected over sulfuric acid; oxygen

Correct answer

A. Collected over potassium hydroxide solution; carbon dioxide

Step-by-step solution

In the Dumas method, nitrogen is collected in the upper part of a graduated tube over an aqueous solution of potassium hydroxide, which absorbs carbon dioxide.

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