Question

Which of the following statements is correct about the given reaction?
$4F{e}_{\left(s\right)}+3O_{2\left(g\right)}\to 2F{e}_2{O}_{3\left(g\right)}$

• A. Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product; therefore, it follows law of conservation of mass.
• B. Total mass of reactants = total mass of product; therefore, law of multiple proportions is followed.
• C. Amount of $F{e}_2{O}_3$ can be increased by taking any one of the reactants (iron or oxygen) in excess.
• D. Amount of $F{e}_2{O}_3$ produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess.

Answer 1

The correct option is A Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product; therefore, it follows law of conservation of mass.

For the given reaction : $4Fe\left(s\right)+3O_2\left(g\right)\to 2F{e}_2{O}_3\left(g\right)$

According to the law of conservation of mass total mass of iron and oxygen in reactants = total mass of iron and oxygen in the product.

The total mass of reactants = total mass of product; therefore, the law of conservation of mass is followed.

Hence, option $A$ is correct.