MCQ
Which of the following statements is correct about the given reaction

$4F{e_{(s)}} + 3{O_{2(g)}} \to 2F{e_2}{O_{3(s)}}$

  • Total mass of iron and oxygen used in reaction $=$ total mass of ferric oxide in product; therefore, it follows law of conservation of mass.
  • B
    Total mass of reactants used in the reaction $=$ total mass of product; therefore, law of multiple proportions is followed
  • C
    Amount of $Fe_2O_3$ can be increased by taking any one of the reactants (iron or oxygen) in excess.
  • D
    Amount of $Fe_2O_3$ produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess

Answer

Correct option: A.
Total mass of iron and oxygen used in reaction $=$ total mass of ferric oxide in product; therefore, it follows law of conservation of mass.
a

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