The decomposition of KClO3 to KCl and O2 on heating is an example of:
(a) intermolecular redox change
(b) intramolecular redox change
(c) disproportionation or auto redox change
(d) none of the above
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(b) 2KClO3 →2KCl + 3O2. An intramolecular redox change is one in which one element of a compound is oxidised (O2- to O2°) and one element is reduced (Cl5+ to Cl1-).