Question

What is the correct name for the compound FeCl2•4H2O? iron (III) dichloride tetrahydrate iron (IV) chloride hydrate iron dichloride hydrate iron tetrachloride hydrate iron (II) chloride tetrahydrate

Answer 1

The correct name of FeCl₂·4H₂O is iron(II) chloride tetrahydrate.

• Must use Stock system because Fe is a transition metal and can have more than one charge

• 2Cl⁻ needs 1Fe²⁺ to balance charge, ∴ iron(II)

• Cl⁻ is chloride (no multiplying prefix for binary ionic compounds)

• 4 = “tetra” + water = “hydrate” → tetrahydrate

Put it all together and you get iron(II) chloride tetrahydrate (three words)

Answer 2

Answer:

iron(II) chloride tetrahydrate