Which of the following statements is correct about the reaction given below:
4Fe(s) + 3O2(g) → 2Fe2O3(g)
1
Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product therefore it follows law of conservation of mass.
2
Total mass of reactants = total mass of product; therefore, law of multiple proportions is followed.
3
Amount of Fe2O3 can be increased by taking any one of the reactants (iron or oxygen) in excess.
4
Amount of Fe2O3 produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess.