Question

For an exothermic chemical process occurring in two steps as follows (i) $A+B\to X(slow)(ii)X\to AB(fast)$ the process of reaction can be best described by

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (C)

First step is slow (require large activation energy) second step is fast (less activation energy) and overall reaction is exothermic. So product energy level should be less as compare to reactants.