Question

$4.88\, g$ of $KClO_{3}$ when heated produced $1.92 \,g$ of $O_{2}$ and $2.96 \,g$ of $KCl$. Which of the following statements regarding the experiment is correct?

• A. The result illustrates the law of conservation of mass
• B. The result illustrates the law of multiple proportions
• C. The result illustrates the law of constant propositions
• D. None of the above laws is followed

Answer 1

Answer: (A)

$\underset{4.88 \,g }{2 KClO _3} \longrightarrow \underset{2.96\, g }{2 KCl }+\underset{1.92 \,g }{3 O _2}$
Since, mass of the products $(2.96 + 1.92)$ is equal to the mass of the reactant, this illustrates the law of conservation of mass.