| \[A+{{B}^{+}}\to N.\,R\] \[;\,\,B+{{C}^{+}}\to N.\,R\] |
| \[B+{{D}^{+}}\to {{B}^{+}}+D\] \[;\,\,C+{{D}^{+}}\to {{C}^{+}}+D\] |
| \[A+C\to {{C}^{+}}+A\] \[;\,\,D+{{A}^{+}}\to {{D}^{+}}+A\] |
A) \[B<D<A<C\]
B) \[C<B<D<A\]
C) \[A<D<B<C\]
D) \[D<C<A<B\]
Correct Answer: C
Solution :
Stronger reducing metal displaces ions of weaker reducing metals from the solution. From first two reactions A is weaker reducing agent than 6. 6 is weaker reducing agent than C. Reducing power: A < B < C Form the next two reactions; B is stronger reducing agent than D C is stronger reducing agent than D Form the last reactions, D is stronger reducing agent than A. Thus, overall reducing strength is A < D < B < C.
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