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What is the number of water molecules present in a Ferrous Sulphate crystal ?

What is the number of water molecules present in a Ferrous Sulphate crystal ? Correct Answer 7

Key Points

  • The chemical formula of ferrous sulphate crystal is FeSO4.7H2O.
  • The common name of ferrous sulphate is Green vitriol
  • It is a yellow-brown or greenish crystalline solid.
  • The colour of crystalline FeSO4 .7H2O is light green. This light green colour changes to reddish-brown or brown colour upon heating.   
  • It is heptahydrate salt.
  • FeSO4.4H2O is tetrahydrate salt, while FeSO4.5H2O is pentahydrated salt.
  •  It is heptahydrate salt.
  • FeSO4.4H2O is tetrahydrate salt, while FeSO4.5H2O is pentahydrated salt.  

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