The concept of oxidation number (O.N) is very important in under standing redox reaction s it helps to identify the oxidant / reductant in a redox reaction it also helps to (i) find oiut thepossible molecular formula of any neutral compound and (ii) to balance redox reaction when copper is treated with a certain concentraton of nitric acid oxide and nitrogen dioxide are liberated in equal volume according to the equation XCu+YHNO_(3)rarrCu(NO_(3))_(2)+NO+NO_(2)+H_(2)O the coefficeents of x and y are

The concept of oxidation number (O.N) is very important in under stand

1.	The concept of oxidation number (O.N) is very important in under standing redox reaction s it helps to identify the oxidant / reductant in a redox reaction it also helps to (i) find oiut thepossible molecular formula of any neutral compound and (ii) to balance redox reaction when copper is treated with a certain concentraton of nitric acid oxide and nitrogen dioxide are liberated in equal volume according to the equation XCu+YHNO_(3)rarrCu(NO_(3))_(2)+NO+NO_(2)+H_(2)O the coefficeents of x and y are
Answer» 2 and 3 2 and 6 1 and 3 3 and 8 Solution :Balanced equation for evolution of NO and `NO_(2)` respectively are `3Cu +8HNO_(3) rarr 3Cu(NO_(3))_(2)+2NO+4H_(2)O` `Cu+4HNO_(3)rarrCu(NO_(3))_(2)+2NO_(2)+2H_(2)O` adding eqt (i) and (II) we have `4Cu+12 HNO_(3)rarr2Cu(NO_(3))_(2)+NO_(2)+NO+3H_(2)O` Thus coefficient x ANDY of Cu and `HNO_(3)` respecitively are 2and 6