Question

Write the chemical formula for the heptahydrate of Iron (II) sulphate.

Answer 1

1. Iron (II) sulfate heptahydrate is a blue-green, crystalline compound which is used to prepare other Iron compounds.
2. As we know, hepta is the prefix used for seven.
3. Therefore, heptahydrate means seven molecules of water.
4. Hence, the formula of Iron (II) sulfate heptahydrate is ${\mathrm{FeSO}}_4.7{\mathrm{H}}_2\mathrm{O}$.

Therefore, the chemical formula for the heptahydrate of Iron (II) sulphate is ${\mathrm{FeSO}}_4.7{\mathrm{H}}_2\mathrm{O}$.