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Jishaan
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Asked: 2021-12-08T10:58:18+00:00 In:

If copper is kept in open air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of:

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Poll Results

0%[A] CuSO₄
100%[B] CuSO₃ ( 2 voters )
0%[C] Cu(NO₃)₂
0%[D] CuO
Based On 2 Votes

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Copper gets a green coating due to the formation of a mixture of copper carbonate (CuCO₃) and copper hydroxide when it reacts with carbon dioxide gas and the moisture present in air. This is called tarnishing of copper.

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    1 Answer

    1. [B] CuSO₃

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