What happens when chlorine gas is bubbled through a solution of iron (II) salt in a boiling tube
When chlorine gas is bubbled through a solution of iron (II) salt in a boiling tube, a chemical reaction takes place. Specifically, the chlorine gas oxidizes the iron (II) ions in the salt to form iron (III) ions.
To understand the reaction, we need to know the chemical formula of the iron (II) salt. Let's assume it is iron (II) chloride (FeCl2). The reaction between chlorine gas (Cl2) and iron (II) chloride can be represented as follows:
FeCl2 + Cl2 -> FeCl3
In this reaction, each chlorine molecule (Cl2) reacts with one iron (II) ion (Fe2+) to produce one iron (III) ion (Fe3+) and two chloride ions (Cl-). Therefore, the iron (II) chloride is being oxidized to iron (III) chloride.
This reaction can be observed by the color change in the solution. Initially, the solution contains iron (II) ions, which are pale green in color. However, as the iron (II) ions get oxidized to iron (III) ions, the solution turns brownish-yellow due to the formation of iron (III) chloride.
Overall, the reaction between chlorine gas and iron (II) salt results in the oxidation of iron (II) ions to iron (III) ions, leading to a color change in the solution.
When chlorine gas is bubbled through a solution of iron (II) salt in a boiling tube, the following reaction occurs:
2 FeCl2 + Cl2 → 2 FeCl3
The chlorine gas reacts with the iron (II) salt (ferrous chloride) to form iron (III) chloride. The iron (II) ions (Fe2+) are oxidized to iron (III) ions (Fe3+), while chlorine (Cl2) is reduced to chloride ions (Cl-).
The reaction is typically observed as a color change in the solution, from pale green or light blue (indicating the presence of ferrous ions) to a darker green or yellowish-brown (indicating the formation of ferric ions).
iron II is oxidized to iron III.
Cl2 is reduced to Cl^-
FeX + Cl2 ==> Fe^3+ + 2Cl^- + X^2-. You balance.