4Fe(s) + 3O2(g) → 2Fe2O3(g) (i) Total mass of iron and oxygen in reactants = total mass of iron and oxygen

Question

Which of the following statements is correct about the reaction given below:

4Fe(s) + 3O₂(g) → 2Fe₂O₃(g)

(i) Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product therefore it follows law of conservation of mass.

(ii) Total mass of reactants = total mass of product; therefore, law of multiple proportions is followed.

(iii) Amount of Fe₂O₃ can be increased by taking any one of the reactants (iron or oxygen) in excess.

(iv) Amount of Fe₂O₃ produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess.

Answer 1

(i) Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product therefore it follows law of conservation of mass.