Copper bowl loses luster after sometime. …
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Yogita Ingle 4 years, 11 months ago
A copper bowl loses its lusture because copper is very reactive metal and it reacts with atmospheric oxygen to form copper oxide.
2Cu+O2 --> 2CuO
This cover oxide is impervious and thick which is not lustrous. And copper oxide prevents the metal from rusting and corroding further.
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