1.

Which of the following statements is correct about the reaction given below : 4Fe(s)+3O_(2)(g) rarr 2Fe_(2)O_(3)(s)

Answer»

Total MASS of iron and oxygen in REACTANTS = total mass of iron and oxygen in PRODUCT therefore it follows law of conservation of mass.
Total mass of reactants = total mass of product , therefore, law of multiple PROPORTIONS is followed
Amount of `Fe_(2)O_(3)` can be INCREASED by taking one of the reactants (iron or oxygen) in excess.
Amount of `Fe_(2)O_(3)` produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess.

Solution :Statement (a) is correct according to law of conservation of mass.


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