Question

Explain any 4 changes that you observe during Decomposition reaction.

Class - 10th
Chapter - Chemical reactions and equations.

I am not asking what is decomposition reaction and combination reaction.

Please don't give wrong answers. ​

Answer 1

Answer:

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1)Decomposition of potassium chlorate:When heated strongly, potassium chlorate decomposes into potassium chloride and oxygen. This reaction is used for the preparation of oxygen.

2)Decomposition of silver chloride:Place a small quantity of silver chloride (AgCl) taken in a watch glass under sunlight for some time. The crystals slowly acquire a grey colour. On analysis, it is found that the sunlight has caused decomposition of silver chloride into silver and chlorine.

3)Decomposition of hydrogen peroxide: In the presence of light, hydrogen peroxide decomposes into water and oxygen

4)Decomposition of hydrated oxalic acid:

Hydrated oxalic acid (H2C2O4.2H2O) decomposes into oxalic acid and water when heated.

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Answer 2

Explanation:

Four Changes that Occur during Chemical Reactions:-

i.A Compound break into or more elements to form different Compounds.

ii.Durning Deposition reaction heat is evolved .

III.This reaction takes place into ..the presence of Sunlight.

.

iv.And also two or more products are formed from a single reactant from Chemical reaction.

hope it will help you.