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Q.

4.88 g of ${KClO}_{3}$ when heated, produces 1.92 g of $O_{2}$ and 2.96 g of KCl. Which of the following statements is true regarding the experiment?

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a

The result illustrates the law of conservation of mass

b

The result illustrates the law of multiple proportion

c

The result illustrates the law of constant proportion

d

Gaylussac's law of combining volumes

answer is A.

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Detailed Solution

$\underset{4.88 g}{2 {KClO}_{3}} ⟶ \underset{4.88 g}{\underset{⏟}{\underset{2.96 g}{2 KCl} + \underset{1.92 g}{3 O_{2}}}}$

Since, mass of the products (2.96 g +1.92 g ) is equal to the mass of the reactant (4.88 g). This illustrates the law of conservation of mass.

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4.88 g of KClO3 when heated, produces 1.92 g of O2 and 2.96 g of KCl. Which of the following statements is true regarding the experiment?