Home
Class 10
CHEMISTRY
If you collect silver coins and copper c...

If you collect silver coins and copper coins, after some days a black coating on silver coins and a green coating on copper coins appear. Which chemical phenomenon is responsible for these coatings? Write the chemical name of these black and green coatings.

Text Solution

Verified by Experts

Corrosion is responsible for this coating on the coins. Black coating is due to the formation of `Ag_2S` and Green coating is due to the formation of `CuCO_3.Cu(OH)_2`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL REACTIONS ADN EQUATIONS

    SUBHASH PUBLICATION|Exercise VALUE BASED QUESTIONS|8 Videos

  • CHEMICAL REACTIONS ADN EQUATIONS

    SUBHASH PUBLICATION|Exercise SHORT ANSWERS|8 Videos

  • CARBON AND ITS COMPOUNDS

    SUBHASH PUBLICATION|Exercise VALUE BASED QUESTION|7 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    SUBHASH PUBLICATION|Exercise VALUE BASED QUESTION|2 Videos

Similar Questions

Explore conceptually related problems

Iron objects acquires redish brown coating when left exposed to moist air. Name the chemical process responsible for this coating and the red coating formed.

Some articles made of silver, copper and iron get coloured coating over them when they are exposed to air . Identify the colour and chemical name of the substance of coating in each case.

When iron rod is kept dipped in copper sulphate solution for some time, a brown coating is formed on the iron rod. What change will be observed in the colour of the solution? Also write chemical equation for the reaction involved.

Write the chemical name of the coating that forms on silver and copper articles when these are left exposed to moist air.

Why does a copper vessel devlop with green coating in rainy season ?

A copper plate was dipped into a solution of silver nitrate . After sometime , a black layer was observed on the surface of copper plate. State the reason for it and write chemical equation of the reaction involved.

When a copper wire was left in silver nitrate solution for sometime, it was observed that the solution turned bluish green. (i) Explain the observation . (ii) Write the balanced chemical equation to represent the change taking place.