A colouless solution of a compound gives a precipitate with `AgNO_(3)` solution but no precipitate with a solution of `Na_(2)CO_(3)`. The action of concentrated `H_(2)SO_(4)` on the compound liberates a suffocating reddish brown gas.
The compound is `:`

Options

A. `Ba(CH_(3)COO)_(2)`
B. `CaCl_(2)`
C. `Nal`
D. `NaBr`

Answer

D

Explanation

`Ag^(+)+Br to AgBr darr ("pale yellow"),NaBr+Na_(2)CO_(3) to` No reaction.
`2NaBr+2H_(2)SO_(4) to Br_(2) uarr ("reddish brown") +SO_(2)+SO_(4)^(2-)+2Na^(+)+2H_(2)O`