Question

4.88 g of $KClO_{3}$when heated produced 1.92 g of $O_{2}$and $2.96g$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 proportion.
• D. None of the above laws is followed.

Answer 1

Answer: (A)

The result illustrates the law of conservation of mass.

Answer 2

(1) : $\underset{4.88g}{2KClO_{3}} \rightarrow \underset{2.96g}{2KCl} + \underset{1.92g}{3O_{2}}$

Since, mass of the products $(2.96 + 1.92)$ is equal to the mass of the reactants, this illustrates the law of conservation of mass.