1.

NaCl, NaBr and NaI mixture on heating with conc. H_2 SO_4 gives gases respectively.

Answer»

HCl,`Br_(2),I_(2)`
HCl,HBr,HI
`Cl_(2),Br_(2),I_(2)`
NONE

SOLUTION :`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`.


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