Question

Which of the following statements is correct about the given reaction
$4Fe_{\left(s\right)} +3O_{2\left(g\right)} \to 2Fe_{2}O_{3\left(g\right)}$

• 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 followe
• C. Amount of $Fe_{2}O_{3}$ can be increased by taking any one of the reactants (iron or oxygen) in excess
• D. 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

Answer 1

Answer: (A)

According to law of conservation of mass, total mass of elements in reactants is equal to the total mass of elements in products