Question

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

$4Fe\left(s\right)+{30}_2\left(g\right)\to 2F{e}_2{0}_3\left(g\right)$

(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

(a)

According to the law of conservation of mass,

Total mass of reactants = Total mass of products

Amount of $F{e}_2{O}_3$ is decided by limiting reagent.