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Question

The formula of iron (III) sulphate is _____________.


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Solution

Iron(III) sulphate:

  • Iron(III) sulphate has a yellow colour and is water-soluble.
  • It can be found in a range of minerals, but it is most commonly found in marcasite and pyrite.
  • Ferric sulphate is most commonly extracted from nature, but it can also be made by heating ferrous sulphate with sulphuric acid.

Therefore there must be 2 atoms of Fe and 3SO4 units in the formula.

Formula of Iron(III)sulphate by the crisscross method

Therefore, the formula of iron (III) sulphate is Fe2(SO4)3.


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