Example 7:
ion:
Write the equation for preparation of oxygen, by heating potassium chlorate.
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Answer:
Heating it in the absence of a catalyst converts it into potassium perchlorate: 4 KClO3 → 3 KClO4 + KCl. With further heating, potassium perchlorate decomposes to potassium chloride and oxygen: KClO4 → KCl + 2 O.
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Explanation:
2kcl03---heat--2kcl+3o2
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