Machine-translated by Google. Questions are authored in English.
Top

Discussion

What is needed for rusting to occur?

  • A.Water and oxygen
  • B.Carbon dioxide
  • C.Oxygen
  • D.Water

Answer: A

Rusting needs both water and oxygen. Neither alone will do it: iron kept in dry air or in boiled, air-free water does not rust.

The product is hydrated iron(III) oxide, Fe2O3·nH2O. Dissolved salt or acid speeds the process by making the water a better electrolyte.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.