1.

Which of the following reactions is an example of autoreduction ?

Answer»

`Fe_(3)O_(4)+4COrarr3Fe+4CO_(2)`
`Cu_(2)O+Crarr 2Cu+CO`
`Cu_((aa))^(2+) +Fe_((G)) rarrCu_((s))+Fe_((aq))^(2+)`
`Cu_(2)+1/2Cu_(2)S rarr 3Cu +1/2SO_(2)`

Solution :`overset(+1)(Cu_2O)+1/2overset(+1)(Cu_2)overset(-2)Srarr3Cu+1/2overset(+4)(SO_2)`
It is not intermolecular redox reaction .


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