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

A colouless solution of a compound gives a precipitate with `AgNO_(3)`

1.	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 `:`A. `Ba(CH_(3)COO)_(2)`B. `CaCl_(2)`C. `NaI`D. `NaBr`
Answer» Correct Answer - 4 `Ag^(+)+Br^(-)rarrAgBrdarr("paly yellow")" "," "NaBr+Na_(2)CO_(3)rarr"No reaction"` `2NaBr+2H_(2)SO_(4)rarrBr_(2)uarr(" reddish brown")+SO_(2)+SO_(4)^(2-)+2Na^(+)+2H_(2)O.`

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