Question

why does fe require steam to evolve hydrogen?​

Answer 1

Answer:

the steam iron process is one of the oldest method of producing hydrogen. this gas reacts with iron oxides to produce a reduced form of iron oxide.

Answer 2

Answer:

Fe has a low reactivity. As it is a metal, it has small and strong intermolecular spaces between it's atoms. So it cannot react with H2O in liquid state. Therefore it reacts with H2O in gaseous state. As gas molecules can pass through the small spaces to form another molecules.

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