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which of the following reactions is an example of autoreduction? 1.FeS+3/2(O 2 )----->FeO+SO 2 2.FeO+SiO 2 ------>FeSiO 3 . 3.Cu 2 O+1/2(Cu 2 S)------>3Cu+1/2(SO 2 ). 4.Cu 2 S+3/2(O 2 )-------->Cu2O+SO 2 .

which of the following reactions is an example of autoreduction?


1.FeS+3/2(O2)----->FeO+SO2


2.FeO+SiO2------>FeSiO3.


3.Cu2O+1/2(Cu2S)------>3Cu+1/2(SO2).


4.Cu2S+3/2(O2)-------->Cu2O+SO2.

Grade:12

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
8 years ago
reduction reaction is a type of reaction in which the oxidation number decreases
in case of 3rdreaction the oxidation number changes from +1 to 0 so the elment reduces its oxidation number
Cu2O+1/2(Cu2S)------>3Cu+1/2(SO2
in case ofFeS+3/2(O2)----->FeO+SO2 andCu2S+3/2(O2)-------->Cu2O+SO2.the oxidation number does not change it remins same

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