Which fo the following statements are correct concerning redox propreties ?
(i) The reducing power of hydrogen halides increases from hydrogen chloride to hydrogen iodide.
(ii) The oxidizing power of halogens decreases from chlorine to iodine.
A metal M for which `E^(Ɵ)` for the half-reaction
`M^(n+) +n e^(-) hArr M`
is very negative will be a good reducing agent.

Options

A. (i) ,(ii) ,(ii)
B. (i), (iv)
C. (ii), (iii)
D. (i), (iii)

Answer

A

Explanation

Order of reducing power :
` HCI lt HBr lt HI`
This happens because of the decrease in the (H-X) bond strength.
Order of oxdizing power :
` CI_2 gt Br_2 gt I_2`
This happens because fo the decrease in the value fo reduction potential .
If `E_(M^(n+)//M)^Ө` is `-ve` , it implies that the process of reduction is nonspontaneous while the process of oxidation is spontaneous.