When solid KClO 3 is heated strongly, it decomposes to form solid potassium chloride, KCl, and O 2 gas A 0 415 g sample of impure KClO 3 is heated strongly and the O 2 gas produced by the decomposition is collected over water When the wet O 2 gas is cooled back to 26 C, the total volume is 229 mL a...

To find the mass percentage of KClO3 in the original sample we can use the ideal gas law and the information provided The key is to determine the moles of O2 gas produced and then use stoichiometry to ...

When solid KClO 3 is heated strongly, it decomposes to form solid potassium chloride, KCl, and O

Question:

When solid KClO₃ is heated strongly, it decomposes to form solid potassium chloride, KCl, and O₂ gas. A 0.415 g sample of impure KClO₃ is heated strongly and the O₂ gas produced by the decomposition is collected over water. When the wet O₂ gas is cooled back to 26 °C, the total volume is 229 mL and the total pressure is 323 Torr. What is the mass percentage of KClO₃ in the original sample? Assume that none of the impurities produce oxygen on heating. The vapor pressure of water is 25.22 Torr at 26 °C.

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