give reason on silver acid turn blackish after sometime when exposed to air
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Due to the presence of moisture and acid in the atmosphere which corrodes the metal. Here, hydrogen sulphide changes silver to black and moisture in the atmosphere changes copper to green.
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Silver becomes black because of hydrogen sulfide, a substance that occurs in the air. When silver comes into contact with it, a chemical reaction takes place and a black layer is formed. Silver oxidizes faster in places with a lot of light and high humidity.
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