Home
Class 12
CHEMISTRY
When metallic copper comes in contact wi...

When metallic copper comes in contact with mositure, a green powdery/pasty coating can be seen over it. This is chemically known as

A

Copper sulphide - Copper carbonate

B

Copper carbonate - Copper sulphate

C

Copper carbonate - Copper hydroxide

D

Copper Sulphate - Copper sulphide

Text Solution

Verified by Experts

The correct Answer is:
C

`Cu+O_(2)+CO_(2)+H_(2)OrarrCu(OH)_(2).CuCO_(3)`
Promotional Banner

Topper's Solved these Questions

  • D & P-BLOCK ELEMENTS

    ERRORLESS |Exercise Critical Thinking|21 Videos
  • D & P-BLOCK ELEMENTS

    ERRORLESS |Exercise JEE Section (Only one choice correct answer)|38 Videos
  • D & P-BLOCK ELEMENTS

    ERRORLESS |Exercise JEE Section (Numeric answer type questions)|2 Videos
  • COORDINATION CHEMISTRY

    ERRORLESS |Exercise JEE(ADVANCED 2018 MORE THAN ONE CHOICE CORRECT ANSWER|1 Videos
  • ELECTROCHEMISTRY

    ERRORLESS |Exercise Jee Section JEE (Advanced) 2018 (Numberic answer Type Questions)|2 Videos

Similar Questions

Explore conceptually related problems

(a) name an alloy of copper. State its chemical composition and ay one use. (b) Explain why, when a copper object remains in damp air for a considerable time, a green coating is formed on its surface. What is this process known as?

A student has been collecting silver coins and copper coins. One day she observed a black coating on silver coins and a green coating on copper coins. Which chemical phenomenon is responsible for these coatings ? Write the chemical names of black and green coatings ?

When a copper vessel is exposed to moist air for a long time, it acquires a dull green coating on its surface. The material of this green coating is a mixture of

When a copper vessel is exposed to moist air for a long time, it acquires a dull green coating on its surface. The material of this green coating is a mixture of:

On heating copper powder in air, the surface of copper powder becomes coated with black CuO. How can this black coating be converted into brown copper ? Write chemical equation for the reaction that occurs during the colour change.