Which of the following statements is correct about the reaction given below ?
`4 Fe_((s)) +3O_(2(g)) rarr 2Fe_(2)O_(3(g))`

Options

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 `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)` will decrease if the amount of any one of the reactants ( iron or oxygen ) is taken in excess.

Answer

A

Explanation

According to the law of conservation of mass,
The total mass of products `=` Total mass of reactants
The Amount of `Fe_(2)O_(3)` is decided by limiting reagent.