1.

Whichofthefollowingreactions isanexampleof autoreduction ?

Answer»

`FE _ 3 O_ 4+4 COto3 Fe+4CO _ 2`
` Cu_2O+ C to2Cu+ CO`
` Cu^( 2 +)(aq) +Fe (s) to Cu (s) +Fe ^(2 +) (aq) `
`Cu _ 2 O+(1)/(2) Cu_ 2S to3 Cu+(1)/(2)SO_ 2`

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