The removal of Black coating on silver involves which type of
action, Physical or Chemical? Justify your answer.
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● The removal of black coating on Silver involves chemical type of reaction.
● Black coating on Silver is called tarnish which is formed due to the reaction of silver with hydrogen sulphide present in the atmosphere.
● This tarnish when comes in contact with aluminium and salt and Bicarbonate the sulphur present in combination with silver gets detached landforms aluminium sulphide.
● As formation of new compounds occurs in the process of removal of black coating on silver the process is a chemical reaction.
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