Question

Write the net reaction or none for the following: Chlorine gas is bubbled into a solution containing Fe²+ ions.

a) None
b) Cl₂ + 2Fe²+ → 2Cl⁻ + 2Fe³⁺
c) Cl₂ + Fe²⁺ → 2Cl⁻ + Fe³⁺
d) Cl₂ + Fe²⁺ → Cl⁻ + Fe³⁺

Answer 1

The correct answer is option (b), which expresses the redox reaction between chlorine gas and Fe2+ ions as Cl2 + 2Fe2+ → 2Cl- + 2Fe3+.

Step-by-step explanation:

When chlorine gas (Cl2) is bubbled into a solution containing Fe2+ ions, a redox reaction occurs where chlorine is reduced and the iron ions are oxidized. The balanced equation for this reaction is:

Cl2(g) + 2Fe2+(aq) → 2Cl−(aq) + 2Fe3+(aq)

Therefore, the correct answer is (b): Cl2 + 2Fe2+ → 2Cl− + 2Fe3+. In this reaction, each chlorine atom gains one electron (is reduced) to form two chloride ions (Cl−), and each iron ion loses one electron (is oxidized) to form Fe3+ ions.