MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryHydrogenPreparation of Dihydrogen

Which property of hydrogen is shown by the following reactions ? (i) Fe3O4 + 4H2 -> 3Fe + 4H2O (ii) CO + H2 -> O ZnO Cr CH3OH

A.Reducing character✓ Correct

B.Oxidising character

C.Combustibility

D.High reactivity

Explanation

0 1 3 4 2 2 Fe O 4H 3Fe 4H O -> 2 3 ZnO Cr O 2 3 CO H CH OH -> Fe3O4 is reduced to Fe which implies that H2 acts a reducing agent CO is reduced to CH3OH which implies H2 acts as a reducing agent. Hydrides

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