JEE PYQ: Qualitative Analysis Question 8
Question 8 - 2019 (11 Jan Shift 1)
An organic compound is estimated through Dumas method and was found to evolve 6 moles of CO₂, 4 moles of H₂O and 1 mole of nitrogen gas. The formula of the compound is:
(1). (C₁₂H₈N)
(2). (C₁₂H₈N₂)
(3). (C₆H₈N₂)
(4). (C₆H₈N)
Show Answer
Answer: (3)
Solution
[CₓHᵧNᵤ] →(Dumas)→ 6CO₂ + 4H₂O + N₂. Mol C = 6, Mol H = 8, Mol N = 2. Formula = C₆H₈N₂.