Chemical Kinetics Question 353

Question: $ A\to B,\Delta H=10kJ,mo{l^{-1}},{E_{a(f)}}=50kJ,mo{l^{-1}} $ , then $ E_{a} $ of $ B\to A $ will be

Options:

A) $ 40kJ,mo{l^{-1}} $

B) $ 50kJ,mo{l^{-1}} $

C) $ -50kJ,mo{l^{-1}} $

D) $ 60kJ,mo{l^{-1}} $

Show Answer

Answer:

Correct Answer: D

Solution:

[d] $ A\xrightarrow{{}}B,\Delta H=-10,kJ,mo{l^{-1}} $ It is an exothermic reaction. $ {E_{a(b)}}={E_{a(f)}}-\Delta H $

$ =50-( -10 )=60kJ $



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