Question

Copper utensils are generally cleaned by using tamarind or lemon. Identify the reason from the following statements?

Copper develops a layer of acid which reacts with acid present in tamarind

Copper develops a layer of copper carbonate which reacts with acid present in tamarind.

The statement given in the question is incorrect.

Copper develops a layer of oxide which react with acid present in tamarind.

Answer 1

Answer:

Additional Information:-The citric acid is present in the lemon or tamarind neutralizes the basic copper carbonate and dissolves the layer. That is why, the tarnished copper vessels are cleaned with lemon or tamarind juice to give the surface of the copper vessel its characteristic lustre.