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How would you show that silver is chemically less reactive than copper?


Take copper sulphate solution in a test tube and place a silver few granule in it. After some time you observe that there is no change in the test tube, i.e., blue colour of copper sulphate does not fade away. This shows silver is less reactive than copper.

Ag(s) + CuSO4(ag) → No reaction

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A solution of copper sulphate was kept in an iron pot. After a few days, the iron pot was found to have a number of holes in it. Write the equation of the reaction that took place. Explain this reaction in terms of reactivity.

In nature aluminium is found in the form of its compounds while gold is found in free state. Give reasons.

Explain the terms:
(a) Anodising
(b) Aqua regia.


Why should we not throw small sodium pieces into a sink in the laboratory?

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