A student investigates the redox behavior of the halogens and their halides using three separate test-tube reactions:
Which statement correctly describes the chemistry occurring in one of these reactions?
In Reaction 1, Cl2\text{Cl}_2Cl2 acts as a reducing agent, converting Br−\text{Br}^-Br− ions to Br2\text{Br}_2Br2.
In Reaction 2, Cl−\text{Cl}^-Cl− ions are oxidised by concentrated H2SO4\text{H}_2\text{SO}_4H2SO4 to produce Cl2\text{Cl}_2Cl2 gas.
In Reaction 3, I−\text{I}^-I− ions act as a reducing agent, reducing Br2\text{Br}_2Br2 to Br−\text{Br}^-Br−.
In Reaction 3, Br2\text{Br}_2Br2 acts as a reducing agent because it has a greater attraction for electrons than I2\text{I}_2I2.