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Give preparation of dihydrogen from Lane...

Give preparation of dihydrogen from Lane's process .

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Preparation of dihydrogen by Lane.s process : In this process, steam is passed over iron fillings. It is heated upto about 1075 K temperature. Iron gets oxidised to `Fe_2O_4`
`3Fe + underset("steam")overset(4H_2O) to Fe_3O_4 + 4H_2`
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