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Which fo the following reactions is an e...

Which fo the following reactions is an example of intramolecular redox reaction ?

A

`CaCO_3 (s) rarr CaO(s) + CO_2(g)`

B

`2 H_2O(l) rarr 2H_2(g) +O_2(g)`

C

`2 NaH(s) rarr 2Na(s) +H_(2)(g)`

D

`2 KClO_3 (s) rarr 2KCl(s) +3 O_2(g)`

Text Solution

Verified by Experts

The correct Answer is:
D
`2 overset(+5)(Cl)overset(-2)(O_(3))(s) rarr 2K overset(-1)(Cl)(s)+3overset(0)(O_(2))(g)`
It is an example of intramolecular redox reaction because oxygen of ` KClO_3` is oxidized (-2 to 0) while chlorine of ` KClO_3` is reduced (+5 to -1). It is different from disproportionation reaction as different elements (of the same species) are oxidized and reduced.
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