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

4Fe(s) + 3O_{2} (g) \rightarrow 2Fe_{2}O_{3} (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 Fe_{2}O_{3} can be increased by taking any one of the reactants (iron or oxygen) in excess.

(iv) 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.

Answers (1)

The answer is the option (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.

Explanation:

Keeping the Law of conservation in mind, we evaluate both the sides of every equation. The mass of the reactants should be equal to the of the product, and this is only followed in equation (i), therefore it is correct.

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