When sulphuric acid is poured over Zinc metal is added to copper solution?
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Answer:
Solution:
(a) Copper does not react with dilute sulphuric acid. So, no reaction will take place when diluting sulphuric acid is poured onto a copper plate. But when concentrated sulphuric acid is poured onto a copper plate, effervescence is observed.
Copper + Conc. → Copper + Hydrogen
Sulphuric Sulphate gas
Acid
(b) Iron is more reactive than copper. When iron nails are placed in a copper sulfate solution, iron displaces copper to form iron sulfate. Slowly, the blue color of the copper sulfate solution turns into green.
Iron + Copper → Iron + Copper
Sulfate
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Answer:
2Zn + H2SO4 = Zn2SO4 + H2
Explanation:
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