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It is observed that when ozone undergoes...

It is observed that when ozone undergoes decomposition to form `O_(2)`(g) a two step mechanism is observed.
(a) `O_(3)(g)underset(k_(2))overset(k_(1))(hArr) O_(2)(g)+O(g)`
(b)`O_(3)(g)+O(g) overset(k_(3))rightarrow2O_(2)`
Also it is known that `k_(1) gt gt k_(3) and k_(2) gt gt k_(3)`
If `DeltaH` of first reaction is 20 kj and `E_(a)` of second step is 50 kJ then net activation energy will be:

A

50 kJ

B

20 kJ

C

30 kJ

D

70 kJ

Text Solution

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The correct Answer is:
D
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