Explain corrosion

Asked by dipanshuashokagarwal | 10th Jul, 2019, 05:45: PM

Expert Answer:

  • When the surface of a metal is attacked by air, moisture or any other substance around it, the metal is said to corrode and the phenomenon is known as corrosion.
  • Copper forms a green deposit on its surface when exposed to moist air. This green substance is copper carbonate.
  • Silver gets tarnished when exposed to the atmosphere and forms a black coating of silver sulphide.
  • Iron reacts with moist air to acquire a coating of brown flaky substance called rust which is hydrated iron (III) oxide (Fe2O3.xH2O).

Answered by Sheetal Kolte | 11th Jul, 2019, 11:27: AM