Question

A compond A is decomposed in the presence of black powder B and produce a gas C.. identify A,B,C and write equation..?

Answer 1

Answer:

cupper sulphate decompose cuO + gas SO2

Answer 2

Answer:

2KClO

3

MnO

2

(X)

B

2KCl

+

C

3O

2

When compound B i.e. KCl react with silver nitrate (AgNO

3

) then white ppt. of silver chloride is formed along with potssium nitrate solution.

KCl+AgNO

3

→KNO

3

+

white ppt.

AgCl

Black substance X=Manganese dioxide

Gas C i.e. oxygen O

2

does not burn but it is an essential component for burning.

Explanation:

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