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प्रश्न
What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.
उत्तर
When a zinc rod is dipped in a solution of copper sulphate, zinc, being a more reactive metal than copper, will displace copper from copper sulphate solution. The blue colour of the copper sulphate solution gradually fades due to the formation of the green-coloured zinc sulphate. The red-brown colour of copper will be deposited on the zinc rod.
Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
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संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
How would you show that silver is chemically less reactive than copper?
Fill in the following blank with suitable word:
Calcium is a ................. reactive metal than sodium.
Which of the following elements would yield a basic oxide.
Na, S, C, K, H
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
What is the action of water on aluminium ? Write equation of the chemical reaction involved.
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
A zinc plate was kept in a glass container having CuSO4 solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.
