Question

name the green coating formed on copper when it is exposed for a long time and how can it be removed​

Answer 1

Answer:

it's copper carbonate(green color)

It's a type of corrosion that cannot be removed

Answer 2

Answer:

The copper metal react with oxygen resulting in the formation of an outer layer of copper oxide which appears green

It can be removed by scrubbing rhe copper surface with the lemon covered in the salt

We do this because lemon is acidic in nature and when we rubb lemon on the tarnished copper it react to form salt which is then washed away while cleaning the vessel.

Explanation:

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