Identify the redox reaction out of the following reaction and identify the oxidising and reducing agents in them (i)3HCI (aq) +HNO_(3)(aq) rarr CI_(2)(g)+NOcI(g)+2H_(2)O(l) (ii) HgCI(aq)+2 KI(aq)rarrHgI_(2)(s)+2 KCI(aq) (iii) Fe_(2)O_(3)(s)+3CO(g)rarr2Fe(s)+3CO_(2)(g) (iv) PcI_(3)(l)+3H_(2)O(l)rarr3 HCI(aq)+H_(3)PO_(3)(aq) (v) 4NH_(3)+3O_(2)(g)rarr2N_(2)(g)+6H_(2)O(g)

Identify the redox reaction out of the following reaction and identify

1.	Identify the redox reaction out of the following reaction and identify the oxidising and reducing agents in them (i)3HCI (aq) +HNO_(3)(aq) rarr CI_(2)(g)+NOcI(g)+2H_(2)O(l) (ii) HgCI(aq)+2 KI(aq)rarrHgI_(2)(s)+2 KCI(aq) (iii) Fe_(2)O_(3)(s)+3CO(g)rarr2Fe(s)+3CO_(2)(g) (iv) PcI_(3)(l)+3H_(2)O(l)rarr3 HCI(aq)+H_(3)PO_(3)(aq) (v) 4NH_(3)+3O_(2)(g)rarr2N_(2)(g)+6H_(2)O(g)
Answer» Solution :(i) writing the O.Non each atom above its symbol we hve here the O.N of CI increase from -1 in HCI to 0 in `CI_(2)` THEREFORE `CI^(-)` is oxidised and HENCE HCI acts as the reducing agent The O.N of Ndecreases from +5 in `HNO_(3)` to +3 in NOCI therefore `HNO_(3)` acts as the oxidising agent thus reaction (i) is a redox rection ltbRgt (ii) writing the O.N of each atom abvoe its symbol we have therefore the O.N of none of the atoms undergo a change therefore raction (ii) is not a redox reaction (iii) here O.N of fe decreases from +3 in `Fe_(2)O_(3)` to O in Fe therefore `Fe_(2)O_(3)` acts as an oxidising agent further O.N of C increases from +2 in CO to +4 `CO_(2)` therefore reaction (iv) is not a redox reaction (v) writing the O.N of each atom above its symbol we have Here O.N of N increase from-3 to o in `N_(2)`therefore `NH_(3)` acts as a an reducing agent further O.N of O decrease from 0 in `O_(2)` to -2 in `H_(2)O` therefore `O_(2)` acts as a oxidsing agent thus reaction (v) isredox reaction