The process of metal reacting with oxygen present in the air causing it to deteriorate is called corrosion. Answer the following questions given below : a) Write the word equation for Rusting of iron. b) Why do copper utensils turn green when left exposed for a long time? c) Explain any one method to prevent corrosion.
Answers
Answer:
word equation
fe2O3 + x.H2O
Explanation:
prevent corrosion
1.Sacrifical protction: In this method iron is coated with a layer of metal more active than iron
2. Using anti rust solutions
Answer:
A. 4(Fe)+ 6 H2O+ 3 O2 = 4Fe(0H)3
B. 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.
C. You can prevent the corrosion of the metal by coating their surface using any of the following: By applying oil, grease, paint or varnish on the surface. By coating/depositing a thin layer of any other metal which does not corrode.
Explanation:
Thank you.