A) +4
B) +6
C) +2
D) +3
Correct Answer: D
Solution :
+3 \[\operatorname{KI}+{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] \[\operatorname{Oxidation}: 2{{I}^{-}}\to {{I}_{2}}+ 2e\] \[\operatorname{Reduction}: C{{r}_{2}} {{O}^{2-}}_{7} +14{{H}^{+}}+ 6e \to 2C{{r}^{3+}} +7 {{H}_{2}}0\]You need to login to perform this action.
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