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Electrolysis and Electrolytes

46. The decom...

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46. The decomposition of KClO3 (s) on heating takes place as KClO3----->KCl + O2 KClO3------->KClO4 +KCl If 2 gm of sample of KClO3 on decomposition gives 224 my of O2 at STP then calculate the percentage by mass of KCl in the residue

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Q. The decomposition of

K C l O_{3}

K C l

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on heating is an example of:

Q. Oxygen is prepared by catalytic; decomposition of potassium chlorate

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. Decomposition, of potassium chlorate gives potassium chloride

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(O_{2})

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Q. 1.225 g sample of

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(Molar mass of K C l O_{3} = 122.5 g m o l^{- 1}, K C l O_{4} = 138.5 g m o l^{- 1}) K C l O_{3} \to K C l + O_{2} K C l O_{3} \to K C l O_{4} + K C l

Q. Calculate the percent loss in weight after complete decomposition of a pure sample of potassium chlorate,

K C l O_{3} (s) \to K C l (s) + O_{2} (g)

2

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can be produced at STP?

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