JEE Main Chemistry question
The vapour density of undecomposed N₂O₄ is 46. When heated, vapour density decreases to 24.5 due to its dissociation to NO₂. The percent dissociation of N₂O₄ at the final temperature is:
Answer: (A)
Solution
α=(D−d)/d = (46−24.5)/24.5 = 0.878 ≈ 87%.