Write a chemical reaction which is carried out by catalyst with balanced equation​

CH2 = CH2 + 1/2 O2  -Ag--> CH2-O-CH2

Explanation:

Producing Epoxyethane by reacting ethene in presence of a silver catalyst with a limited amount of oxygen. The temperature range of the reaction is 250 - 300°C.

The balanced reaction is as follows -

CH2 = CH2 + 1/2 O2 (Reactants) -silver catalyst--> CH2-O-CH2 (Product)

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the answer would be a