The observation done in preparation of oxygen by potassium chlorate was:

Potassium chlorate melts and decomposes

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Potassium chlorate changes its colour

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Chlorine is evolved as a by-product

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Solution

The correct option is B Potassium chlorate melts and decomposes
Potassium chlorate melts and decomposes to give oxygen .

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Similar questions

During laboratory preparation of oxygen by hydrogen peroxide and potassium chlorate, the gas is collected by _____ displacement of water.

(K C l O_{3})

(K C l)

(O_{2})

K C l O_{3}

O_{2}

2 K C l O_{3} △ - \to 2 K C l + 3 O_{2}

4.9 g

[K = 39; O = 16; C l = 35.5]

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