Question:

An organic compound is estimated through Duma's method and was found to evolve 6 moles of \(\mathrm{CO_2}\), 4 moles of \(\mathrm{H_2O}\) and 1 mole of nitrogen gas. The formula of the compound is :

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Count atoms in the products: moles of C = moles of \(\mathrm{CO_2}\), moles of H = 2 x moles of \(\mathrm{H_2O}\), moles of N = 2 x moles of \(\mathrm{N_2}\).
Updated On: Nov 5, 2026
  • \(\mathrm{C_6H_8N}\)
  • \(\mathrm{C_6H_8N_2}\)
  • \(\mathrm{C_{12}H_8N}\)
  • \(\mathrm{C_{12}H_8N_2}\)
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The Correct Option is B

Solution and Explanation

One mole of the compound is taken to give the stated products.
Carbon: 6 mol \(\mathrm{CO_2}\) gives 6 mol C.
Hydrogen: 4 mol \(\mathrm{H_2O}\) gives \(4 \times 2 = 8\) mol H.
Nitrogen: 1 mol \(\mathrm{N_2}\) gives \(1 \times 2 = 2\) mol N.
So the formula is \(\mathrm{C_6H_8N_2}\).
Answer: (2) \(\mathrm{C_6H_8N_2}\)
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