$E^o_{Cr^{3+}/Cr} =-0.74\, V,\,$ $E^o_{MnO_4^-/Mn^{2+}} =1.51 \,V$
$E^o_{Cr_2O_7^{2-}/Cr^3+} =1.33\,V:$ $E^o_{Cl/Cl^-} =1.36\,V$
Based on the data given above, strongest oxidising agent will be :
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| Catalyst | Process |
| $(A)$ $TiCl_4$ | $(i)$ Wacker process |
| $(B)$ $PdCl_2$ | $(ii)$ Ziegler - Natta polymerization |
| $(C)$ $CuCl_2$ | $(iii)$ Contact process |
| $(D)$ $V_2O_5$ | $(iv)$ Deacon's process |
Reason : Iodine is a polar compound.
$A$. The chromate ion is square planar.
$B$. Dichromates are generally prepared from chromates.
$C$. The green manganate ion is diamagnetic.
$D$. Dark green coloured $\mathrm{K}_2 \mathrm{MnO}_4$ disproportionates in a neutral or acidic medium to give permanganate.
$E$. With increasing oxidation number of transition metal, ionic character of the oxides decreases.
Choose the correct answer from the options given below: