A Mixture of KCl and KClO₃ Weighing 1

question 45

Multiple Choice

A mixture of KCl and KClO₃ weighing 1.34 grams was heated;the dry O₂ generated occupied 143 mL at STP.What percent of the original mixture was KClO₃,which decomposes as follows:

• A)38.9%
• B)58.4%
• C)87.6%
• D)10.7%
• E)23.7%

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