Practicing Success
What color of coating does a copper vessel get when it is exposed to air? |
Reddish brown Silvery Green Black |
Green |
The correct answer is option 3. Green. When a copper vessel is exposed to air and moisture over time, it develops a greenish coating known as copper oxide. This greenish coating is primarily composed of copper carbonate and copper hydroxide, which form due to the reaction of copper with oxygen and carbon dioxide in the air and moisture. Therefore, the correct answer is: Green |