Question

in the test tube a there are some copper turnings teacher added some iron sulphate solution with the help of dropper in test tube b there are some iron fillings teacher added some copper sulphate solution with the help of dropper what will observe​

Answer 1

blue coloured precipitate

Explanation:

blue colour of the precipitate will be due to the formation of copper sulphate, which is blue due to the presence of Cu2+ ions

Answer 2

Observation for the reaction of copper in iron sulfate and iron in copper sulfate

Given:

• Test tube A contains copper + Iron sulfate solution.
• Test tube B contains Iron + Copper sulfate solution.

To find:

Observation in test tube A and B

Explanation:

• In the case of test tube 'A' no reaction will occur because copper is less reactive than iron, due to which it doesn't displaces iron from iron sulfate solution.
• In the case of test tube 'B' as iron is more reactive than copper, it displaces the copper from copper sulfate and forms iron sulfate and copper.
• Due to the formation of copper, the iron fillings change its color from silver to brown.

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