Which of the following statements is correct about the reaction given below:-
`4Fe(s)+3O_(2)(g)rarr2Fe_(2)O_(3)(g)`

Options

A. Total mass of iron and oxygen in reaction =total mass of iron and oxygen in product tehrefore 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)` produced 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.
Total mass of reactants=Total mass of products
Amount of `Fe_(2)O_(3)` is decided by limiting reagent.