JEE Main Chemistry question
In a reaction at equilibrium 'X' mole of the reactant A decomposes to give 1 mole each of C and D. If the fraction of A decomposed at equilibrium is independent of the initial concentration of A, then the value of 'X' is:
Answer: (C)
Solution
For XA⇌C+D, the fraction dissociated is independent of initial concentration only when X=2 (a well-known standard result).