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7. You are given 2.263 g of a mixture of KClO3 and KCl. When heated, the...

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Chemistry

7. You are given 2.263 g of a mixture of KClO3 and KCl. Whenheated, the KClO3 decomposes to KCl and O2, 2 KClO3 (s) → 2 KCl (s)+ 3 O2 (g), and 632 mL of O2 is collected over water at 20 °C. Thetotal pressure of the gases in the collection flask is 736 torr.What is the weight percentage of KClO3 in the sample? The formulaweight of KClO3 is 122.55 g/mol. The vapor pressure of water at 20°C is 17.5 torr.

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3.6 Ratings (499 Votes)
2 KClO3 s 2 KCl s 3 O2 g V 632ml 0632L T 20273 293K PT 736 torr The vapor pressure of    See Answer
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