Final answer:
To balance the chemical equation, we add coefficients to molecules to ensure the number of atoms is the same on both sides of the equation.
Step-by-step explanation:
To balance the chemical equation Fe₂(SO₄)₃ + KSCN → K₃Fe(SCN)₆ + K₂SO₄, we need to make sure that the number of atoms of each element is the same on both sides of the equation. Here is the balanced equation:
Fe₂(SO₄)₃ + 6KSCN → 3K₃Fe(SCN)₆ + 3K₂SO₄
To balance the equation, we added the coefficients in front of each molecule to ensure that the number of atoms is the same on both sides of the equation. This balanced equation accurately represents the chemical reaction.