Question

While preparing for Deepawali Sonia found that all the copper utensils that she used last year have green coloured coating over them. She got upset and started searching on the Google for the ways to clean them. Finally she read that vinegar / lemon juice is very effective for cleaning such deposits. She used lemon juice and was able to restore the shine of the copper utensils. (a) What is the reason of green coloured coating over copper vessel? (b) Give the chemical name of the green coloured compound so formed. (c) How was the lemon juice helpful in removing that coating​

Answer 1

Redox is a type of chemical reaction in which the oxidation states of atoms are changed. Redox reactions are characterized by the actual or formal transfer of electrons between chemical species, most often with one species undergoing oxidation while another species undergoes reduction.