(IIT-JEE 2000) Mixture of and is fused. The weight of in of mixture which releases of is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
(IIT-JEE 2000) Mixture of $KClO_3, Na_2CO_3$ and $K_2SO_4$ is fused. The weight of $KClO_3$ in $1.225\text{ g}$ of mixture which releases $0.48\text{ g}$ of $O_2$ is:
Answer: B
💡 Solution & Explanation
$2KClO_3 \rightarrow 2KCl + 3O_2$. <br>$\text{Moles } O_2 = 0.48 / 32 = 0.015$. <br>$\text{Moles } KClO_3 = (2/3) \times 0.015 = 0.01$. <br>$\text{Mass } KClO_3 = 0.01 \times 122.5 = 1.225\text{ g}$. [15, 29]
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