Why is the reaction Cu2O + .5Cu2S -> 2Cu + .5SO2 called an autoreduction reaction?
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Solution
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)------>2Cu+1/2(SO2)