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Maha Ch

Why does copper precipitate out as a pink solid?

Andy Tsai  Follow

What you describe as pink is the actual colour of copper. The colour of a clean, solid surface of high-purity copper is typically salmon red. In your case, the appearance may be further affected by the particle size of the precipitate.

The familiar reddish-brown colour of copper is caused by copper(I) oxide, which is slowly formed on the metal surface.

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