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Standard VII

Chemistry

Catalyst

What is the c...

Question

What is the catalyst used for the decomposition of potassium chlorate into potassium chloride and oxygen at a lower temperature?

Manganese dioxide

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Manganese oxide

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Manganese chloride

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Manganese chlorate

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Solution

The correct option is A
Manganese dioxide

Manganese dioxide acts as a catalyst for the decomposition of potassium chlorate into potassium chloride and oxygen at a lower temperature.

i.e., $P o t a s s i u m c h l o r a t e + M a n g a n e s e d i o x i d e ⟶ P o t a s s i u m c h l o r i d e + O x y g e n + M a n g a n e s e d i o x i d e$

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Similar questions

Q. When potassium chlorate

(K C l O_{3})

is heated in the presence of manganese dioxide catalyst, it decomposes to form potassium chloride and oxygen gas. Represent this in the form of a balanced chemical equation.

Q. Write the catalyst used in the decomposition of potassium chlorate to get potassium chloride and oxygen.

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

(K C l O_{3})

. Decomposition, of potassium chlorate gives potassium chloride

(K C l)

and oxygen

(O_{2})

. How many moles and how many grams of

K C l O_{3}

are required to produce 2.4 mole

O_{2}

Write the balanced chemical equations of the following reactions.

(a) Sodium hydroxide + sulphuric acid $\to$ sodium sulphate + water

(b) Potassium bicarbonate + sulphuric acid $\to$ potassium sulphate + carbon dioxide + water

(d) Chlorine + sulphur dioxide + water $\to$ sulphuric acid + hydrogen chloride

(e) Silver nitrate $\to$ silver + nitrogen dioxide + oxygen

(f) Copper + nitric acid $\to$ copper nitrate + nitric oxide + water

(g) Ammonia + oxygen $\to$ nitric oxide + water

(h) Barium chloride + sulphuric acid $\to$ barium sulphate + hydrochloric acid

(i) Zinc sulphide + oxygen $\to$ zinc oxide + sulphur dioxide

(j) Aluminium carbide + water $\to$ aluminium hydroxide + methane

(k) Iron pyrites ( $F e S_{2}$ ) + oxygen $\to$ ferric oxide + sulphur dioxide

(l) Potassium permanganate + hydrochloric acid $\to$ potassium chloride + manganese chloride + chlorine + water

(m) Aluminium sulphate + sodium hydroxide $\to$ sodium sulphate + sodium meta aluminate + water.

(n) Aluminium + sodium hydroxide + water $\to$ sodium meta aluminate + hydrogen

(o) Potassium dichromate + sulphuric acid $\to$ potassium chloride + chromium chloride + water + chlorine.

(p) Sulphur + nitric acid $\to$ sulphuric acid + nitrogen dioxide + water.

(q) Sodium chloride + manganese dioxide + sulphuric acid $\to$ sodium hydrogen sulphate + manganese sulphate + water + chlorine.

Select the correct answer from the choice in a bracket to complete each sentence.

_________

[K C l O_{2} / K C l O_{3}]

gives potassium chloride and oxygen on heating with manganese dioxide.

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What is the catalyst used for the decomposition of potassium chlorate into potassium chloride and oxygen at a lower temperature?

The correct option is A Manganese dioxide Manganese dioxide acts as a catalyst for the decomposition of potassium chlorate into potassium chloride and oxygen at a lower temperature. i.e., Potassium chlorate+Manganese dioxide⟶Potassium chloride+Oxygen+Manganese dioxide