InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Which of the following statements are correct concerning redox properties? (i) A metal M for which `E^(@)` for the half life reaction `M^(n+)+n e^(-)hArrM` is very negative will be a good reducing agent. (ii) The oxidizing power of the halogen decrease from chlorine to iodine. (iii) The reducing power of hydrogen halides increases from hydrogen chloride to hydrogen iodide.A. (i),(ii) and (iii)B. (i) and (ii)C. (i) onlyD. (ii) and (iii) only |
|
Answer» Correct Answer - A (i) High negative `E^(@)` for `M^(n+)+n e^(-)hArrM` means a high positive value for the reverse reaction, `M hArrM^(n+)+n e^(-)`. This means M is oxidized very easily. Hence, it is a good reducing agent. (ii) Reduction potentials of halogens are in the order: `Cl_(2) gt Br_(2) gt I_(2)`. thus, `Cl_(2)` is reduced most easily and hence is the best oxidizing agent. (iii) The size of the halide ions is in the order `Cl^(-) lt Br^(-) lt I^(-)`. greater the size of the halide ion, more easily it can lose electrons and get oxidized. Thus, `I^(-)` ions can be oxidized most easily and hene have the greatest reducing power. |
|