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: A
Explanation
The initial number of N2O4 molecules is 1. After dissociation, x moles react, leaving (1-x) and forming 2x NO2. The total molecules are (1-x) + 2x = 1+x.