Question

NaCl, NaBr and NaI mixture on heating with conc. `H_2 SO_4` gives gases respectively.
A. HCl,`Br_(2),I_(2)`
B. HCl,HBr,HI
C. `Cl_(2),Br_(2),I_(2)`
D. None

Answer 1

`NaCl+H_(2)SO_(4) overset(Delta)toNaHSO_(4) +HCl uarr`
`HCl +H_(2)SO_(4) overset(Delta)to` No reaction
`NaBr +H_(2)SO_(4) overset(Delta)to NaHSO_(4)+HBr`
`2HBr+H_(2)SO_(4) overset(Delta)to Br_(2)uarr+SO_(2)+2H_(2)O`
`NaI +H_(2)SO_(4)overset(Delta)to NaHSO_(4)+HI`
`2HI+H_(2)SO_(4)overset(Delta)to I_(2) uarr+SO_(2)+2H_(2)O`.