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Magnetic oxide (Fe_(3)O_(4)) when when heated with hydrogen is reduced to iron and water is also produced. Write balanced equation for the reaction. |
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Answer» Solution :The reaction is : `"Magnetic oxide of iron"+"Hydrogen"rarr"Iron "+"Water"` `"The skeleton EQUATION is :"Fe_(3)O_(2)rarrFe+H_(2)O` The equation contains hydrogen as an elementary gas. Writing it in the atomic state, we have `Fe_(3)O_(4)+HrarrFe+H_(2)O` The biggest formula is `Fe_(3)O_(4)`. Hence, order of selection of atoms for balancing as FE, O and H. (i) To equalise the number of atoms of Fe and O on both sides, MULTIPLY Fe by 3 and `H_(2)O` by 4. We have `Fe_(3)O_(4)+Hrarr 3Fe+4H_(2)O` (ii) The above equation has 8 atoms of H on the R.H.S. as against 1 on L.H.S. To equalise, multiply H atoms by 8 and convert it into molecular state as `4H_(2)`. We have `Fe_(3)O_(4)+4H_(2)rarr 3Fe+4H_(2)O` This is the required balanced molecular chemical equaiton. |
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