Question

copper loses its shine due to the formation of
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Answer 1

Answer:

A copper vessel reacts with oxygen present in air when exposed to it , they forms copper oxide which , in turn , is a black coating over the vessel and makes the vessel to lose its shine . The copper oxide which is formed is black in colour.

Explanation:

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Answer 2

Answer:

It froms Copper carbonate and Carbon hidroxide

If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating.

The green coat is due to the basic copper carbonate formation and is a mixture of copper carbonate and copper hydroxide CuCo3 and

Cu(OH)2.

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