Consider the reaction (A) H_(3)PO_(2)(aq)+4AgNO_(3)(aq)(l)rarrH_(3)PO_(4)+4Ag(s)+4HNO_(3)(aq) (b)H_(3)PO_(2)(aq)+2CuSO_(4)(aq)+2H_(2)O(l)rarrH_(3)PO_(4)(aq)+2Cu(s)H_(2)SO_(4)(aq) (c )C_(6)H_(5)CHO(l)+2[Ag(Nh_(3))_(2)]^(+)(aq)+3OH^(-)(aq)rarrC_(6)H_(5)COO^(-)(aq)+2Ag(s)+4NH_(3)(aq)+2H_(2)O(l) (d)C_(6)H_(5)CHO(l)+2Cu^(2+)(aq)rarr "No change observed" What inferenc edo your draw about the behaviour of Ag^(+) and Cu^(2+) form these reaction ?

Consider the reaction (A) H_(3)PO_(2)(aq)+4AgNO_(3)(aq)(l)rarrH_(3)PO

1.	Consider the reaction (A) H_(3)PO_(2)(aq)+4AgNO_(3)(aq)(l)rarrH_(3)PO_(4)+4Ag(s)+4HNO_(3)(aq) (b)H_(3)PO_(2)(aq)+2CuSO_(4)(aq)+2H_(2)O(l)rarrH_(3)PO_(4)(aq)+2Cu(s)H_(2)SO_(4)(aq) (c )C_(6)H_(5)CHO(l)+2[Ag(Nh_(3))_(2)]^(+)(aq)+3OH^(-)(aq)rarrC_(6)H_(5)COO^(-)(aq)+2Ag(s)+4NH_(3)(aq)+2H_(2)O(l) (d)C_(6)H_(5)CHO(l)+2Cu^(2+)(aq)rarr "No change observed" What inferenc edo your draw about the behaviour of Ag^(+) and Cu^(2+) form these reaction ?
Answer» Solution :Reacting (a) and (B) incdicate that `H_(3)PO_(2)` is a REDUCING agent and thus reduces both `AgNO_(3)` and `CuSO_(4)` to Ag and Cu respectively conversely both `AgNO_(3)` and `CuSO_(4)` act as oxidising agent and thus oxidise `H_(3)PO_(2)` to `H_(3)PO` Reaction (C ) suggest that`Ag(NH_(3))_(2)` oxidses `C_(6)H_(5)CHO` to `C_(6)H_(5)COO^(-)` but reaction (d) indiciates that `Cu^(2+)` IONS cannot oxidise `C_(6)H_(5)CHO` to `C_(6)H_(5)COO^(-)` therefore from the above reaction we conclude that `Ag^(+)` ion is a stronger oxidising agent than `Cu^(2+)` ion