Chemistry, asked by Namithtn, 14 days ago

You have collected some silver coins. After few days observe a black

coating on silver coins.On rubbing with toothpaste the silver coins regain

the shine.

(a) Which chemical phenomenon is resposible for these coatings?

(b) Write the chemical name and formula of the black coating.

Answers

Answered by GιяℓуSσυℓ

4

Answer:

a. Rust are the chemical phenomenon which is resposible for these coatings

b. Formula= Fe2O3•32H2O

Chemical name = iron oxide

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