Using state symbols in chemical equations

State symbols give more information about the reactants and products.

State symbolMeaning
(s)solid
(l)liquid
(g)gas
(aq)aqueous (dissolved in water)
Question

An iron nail is placed in a solution of blue copper(II) sulfate. Over time, a brown solid appears and the solution becomes colourless. This is because copper and a solution of iron(II) sulfate forms.

Add state symbols to the balanced chemical equation for the reaction of iron with copper(II) sulfate.

Fe + CuSO4 → FeSO4 + Cu

Fe(s) + CuSO4(aq) → FeSO4(aq)+ Cu(s)

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