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Answer. Because Iodine comes before than Chlorine in the group 17. In case of non-metals reactivity decreases as we move down in the group. Therefore iodide ions stronger reducing agents than chloride ions.Apr 6, 2018
Why is iodine a better reducing agent than chlorine?
Chlorine has the ability to take electrons from both bromide ions and iodide ions. Bromine and iodine cannot reclaim those electrons from the chloride ions formed. This indicates that chlorine is a more powerful oxidizing agent than either bromine or iodine.
How iodide ions act as a reducing agent?
Summary of the trend in reducing ability In the process, the bromide ions are oxidised to bromine. Iodide ions reduce the sulphuric acid to a mixture of products including hydrogen sulphide. The iodide ions are oxidised to iodine. Reducing ability of the halide ions increases as you go down the Group.
Is iodide The most powerful reducing agent?
Fluoride is the least strong reducing while iodide is the most strong reducing agent. Hence , the iodide ion is the most powerful reducing agent among other halides.
Which ion is the best reducing agent?
Good reducing agents include the active metals, such as sodium, magnesium, aluminum, and zinc, which have relatively small ionization energies and low electro-negativities. Metal hydrides, such as NaH, CaH2, and LiAlH4, which formally contain the H- ion, are also good reducing agents.
Is iodine oxidizing or reducing agent?
So once again, you can conclude that iodine is the oxidizing agent because it oxidizes the thiosulfate anions to the tetrathionate anions while being reduced to the iodide anions.
Why is iodine a weak oxidizing agent?
Fluorine is such a powerful oxidising agent that you can't reasonably do solution reactions with it. Chlorine has the ability to take electrons from both bromide ions and iodide ions. Bromine and iodine can't get those electrons back from the chloride ions formed.
Why is the strongest reducing agent?
What is the strongest reducing agent? Due to the smallest standard reduction potential, lithium is the strongest reduction agent. It decreases another substance when something is oxidized, becoming a reduction agent. Lithium is, therefore, the most powerful reducing agent.
What is the strongest reducing agent?
Lithium, having the largest negative value of electrode potential, is the strongest reducing agent. By convention, the standard electrode potentials are reduction potentials, or the tendency to be reduced. By that convention, the strongest reducing agents will have large negative potentials.
Which is the strongest reducing agent in alkali metals?
Lithium Lithium, which has a high ionisation energy value in alkali metals, serves as the solution's main reducing agent. It is, however, observed that Li is the strongest reducing agent in solution among alkali metals as Li's E value is maximum.
