If in the gaseous phase reaction, N2O4 ⇌ 2NO2, x is the part of N2O4 which dissociates, then the number of molecules at equilibrium will be___________________?
Correct answer: C. (1 + x)
- A. (1 + x)2
- B. (1 - x)
- C. (1 + x)
- D. (1 - x)2
Explanation
Taking one initial mole of N₂O₄, the undissociated amount is 1 − x and dissociation produces 2x moles of NO₂. Thus, total equilibrium molecules are (1 − x) + 2x = 1 + x.
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