When a few pieces of iron are dropped into a blue solution of copper sulphate, its blue colour slowly changes into light green and also a red substance is formed. The blue solution is due to the formation of

iron

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iron sulphate

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iron sulphide

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iron sulphite

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Solution

The correct option is B
iron sulphate

When a few pieces of iron are dropped into a blue solution of copper sulphate, its blue colour slowly changes into light green and also a red substance is formed. The blue solution is due to the formation of iron sulphate.

$I r o n + C o p p e r s u l p h a t e (b l u e s o l u t i o n) \to I r o n s u l p h a t e (l i g h t g r e e n s o l u t i o n) + C o p p e r (r e d d i s h b r o w n s o l i d)$

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Similar questions

When few pieces of iron are dropped into a blue coloured copper sulphate solution, the blue colour fades and eventually turns into light green due to the formation of:

Q. An iron nail was dropped into copper sulphate solution. After some time, the colour of the solution changed from :
(1) light green to blue
(2) blue to light green
(3) light green to colourless
(4) blue to yellow

Q. A piece of granulated zinc was dropped into copper sulphate solution. After some time, the colour of the solution changed from :
(1) light green to blue
(2) blue to colourless
(3) light green to colourless
(4) bule to yellow

Q. What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?

An iron knife kept in blue copper sulphate solution turns the blue solution into light green. Explain?

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