Which stage in the free radical substitution of methane by chlorine will have the lowest activation energy? A CH3• + Cl 2 → CH3Cl + Cl • B Cl • + Cl • → Cl 2 C Cl • + CH4 → CH3• + HCl D Cl 2 → Cl • + Cl •
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● Answer -
(B) Cl• + Cl• → Cl2
● Explaination -
- Activation energy is defined as the least possible amount of energy which is required to start a reaction.
- As free radicals are more reactive than molecules, they react with each other rather spontaneously.
- Therefore, very less energy is required for Cl• radicals to react with each other to form Cl2 .
Cl• + Cl• → Cl2 , ∆Ea = Lowest
Hope this helps you...
(B) Cl• + Cl• → Cl2
● Explaination -
- Activation energy is defined as the least possible amount of energy which is required to start a reaction.
- As free radicals are more reactive than molecules, they react with each other rather spontaneously.
- Therefore, very less energy is required for Cl• radicals to react with each other to form Cl2 .
Cl• + Cl• → Cl2 , ∆Ea = Lowest
Hope this helps you...
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