Extraction of Metals - Result Question 78

####81. Work out the following using chemical equations.

In moist air, copper corrodes to produce a green layer on the surface.

(1998)

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Solution:

  1. $2 Cu+H _2 O+CO _2+O _2 \longrightarrow Cu(OH) _2 \cdot CuCO _3$ Green (basic copper carbonate)


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