The net ionic equation for the reaction between iron (iii) sulfate and potassium hydroxide is
Fe³⁺(aq) + 3OH¯(aq) —> Fe(OH)₃(s) (Option B)
What is a chemical equation?
Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.
The reactants are located on the left side while the products are located on the right side.
Reactants —> Products
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
How to write the net ionic equation
In solution
Fe₂(SO₄)₃ (aq) --> 2Fe³⁺(aq) + 3SO₄²⁻(aq)
KOH (aq) --> K⁺(aq) + OH¯(aq)
The reaction proceeds as follow
Fe₂(SO₄)₃ (aq) + KOH (aq) —>
Fe³⁺(aq) + SO₄²⁻(aq) + K⁺(aq) + OH¯(aq) —> Fe(OH)₃(s) + SO₄²⁻(aq) + K⁺(aq)
Cancel out the spectator ions (i.e SO₄²⁻ + K⁺) and balance to obtain the net ionic equation
Fe³⁺(aq) + 3OH¯(aq) —> Fe(OH)₃(s)
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