Copper becomes green when exposed to moist air for a long period.This is due to:
Asked by NIKHIL | 18th Apr, 2014, 12:23: PM
Expert Answer:
Copper metal when exposed to air turns green in colour due to corrosion. When copper vessel is exposed to air in rainy season, the metal reacts with gases and moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal.
The reaction is as follows:
2Cu + H2O + CO2 + O2 → Cu(OH)2 + CuCO3
Copper metal when exposed to air turns green in colour due to corrosion. When copper vessel is exposed to air in rainy season, the metal reacts with gases and moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal.
The reaction is as follows:
2Cu + H2O + CO2 + O2 → Cu(OH)2 + CuCO3Answered by | 21st Apr, 2014, 11:53: AM
Related Videos
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change