Chlorine reacts with hot and conc.` Ba (OH)_(2)` and produces compound X, `BaCl _(2)` and water. X further reacts with `H _(2) SO_(4)` to give Y and `BaSO_(4).` The average bond order between Cl and O atoms in any one of Y is `"_______."`

Answer

`1.67`

Explanation

`Cl _(2) (g) + Ba(OH) _(2) to overset((X=Ba(ClO _(3))_(2)))(X) + BaCl _(2) + H_(2)O`
`underset(Ba(ClO _(3))_(2))(X ) + H _(2)SO _(4) to underset(Y) (2HClO_(3)) + BaSO_(4)`
`Y = H ^(+) ClO _(3) ^(-) - O- overset(* *) underset(O )underset(||)Cl=O`
Bond order `= ("total number of bonds between two atoms in all structures")/("total numbers of structures") 5/3 =1.67`
`(O-overset(* *) underset(O) underset(||) Cl = O harrO=overset(* *) underset(O) underset(||)Cl =O^(-)harr O=underset(O) underset(|) overset(* *) Cl =O)`