Question

a test tube contains a solutin of one of the followin salts NaCl, NaBr, and NaI describe a single test that can distinguish among these salts.

Answer 1

Halide compounds such as NaCl, NaBr, and NaI can be tested with silver nitrate solution, $\mathrm{AgNO}_3$ . The halogen will react with $\mathrm{Ag}^+$ and form a precipitate, with varying colour depending on the halogen:

AgCl: White

AgBr: Creamy (Pale Yellow)

AgI: Yellow