In acidic solution, the dichromate ion, Cr₂O7²⁻(aq) will oxidize Fe²⁺ to Fe³⁺ and form Cr³⁺ .
This net ionic equation represents the reaction that takes place during the reaction:
Cr₂O7²⁻(aq) + 6 Fe²⁺(aq) + 14 H⁺(aq) → 2 Cr³⁺ (aq) + 6 Fe³⁺(aq) + 7 H₂O(l)
What volume of 0.100 M Cr₂O7²⁻ (aq) is required to oxidize 60.0 mL of 0.250 M Fe²⁺ (aq)?