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what is the term for different metals reacting to each other

Black copper oxide CuO reacts with acetic acid CH3COOH (inside vinegar) forming copper acetate Cu(CH3COO)2 and water:

CuO + 2CH3COOH --> Cu(CH3COO)2 + H2O

A similar reaction happens with Cu(OH)2, CuCO3, Cu2CO3(OH)2 ecc.

The copper acetate is water soluble and dissolves away, leaving a clean copper metal surface.

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16y ago

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