System | \[{{E}^{o}}\](volts) | |
(i) | \[Mn{{O}_{4}}^{-}+8{{H}^{+}}5e\to M{{n}^{2+}}\]\[+4{{H}_{2}}O\] | \[1.51\] |
(ii) | \[S{{n}^{4+}}+2e\to S{{n}^{2+}}\] | \[0.15\] |
(iii) | \[C{{r}_{2}}{{O}_{7}}^{2-}+14{{H}^{+}}+6e\to \]\[2C{{r}^{3+}}+7{{H}_{2}}O\] | \[1.33\] |
(iv) | \[C{{e}^{4+}}+e\to C{{e}^{3+}}\] | \[1.61\] |
A) \[C{{e}^{4+}}>C{{r}_{2}}{{O}_{7}}^{2-}>S{{n}^{4+}}>Mn{{O}_{4}}^{-}\]
B) \[C{{e}^{4+}}>Mn{{O}_{4}}^{-}>C{{r}_{2}}{{O}_{7}}^{2-}>S{{n}^{4+}}\]
C) \[C{{r}_{2}}{{O}_{7}}^{2-}>S{{n}^{4+}}>C{{e}^{4+}}+Mn{{O}_{4}}^{-}\]
D) \[Mn{{O}_{4}}^{-}>C{{e}^{4+}}>S{{n}^{4+}}>C{{r}_{2}}{{O}_{7}}^{2-}\]
Correct Answer: B
Solution :
The redox system having the highest redox potential in the most powerful oxidising agent followed by the one with the lower redox potential.You need to login to perform this action.
You will be redirected in
3 sec