Question

Salt analysis for ammonium sulphate,ammonium chloride,lead acetate,calcium carbonate ,ammonium carbonate,zinc sulphate

Answer 1

Salt analysis is a series of tests performed to determine the chemical composition of a salt.

The specific tests used for salt analysis will depend on the salt being analyzed, but some common tests include:

• Ammonium sulphate: The presence of ammonium ions can be confirmed by adding a few drops of dilute (1%) aqueous ferric chloride solution to the salt solution. A deep blue coloration indicates the presence of ammonium ions.

• Ammonium chloride: The presence of ammonium ions can be confirmed by adding a few drops of dilute (1%) aqueous ferric chloride solution to the salt solution. A deep blue coloration indicates the presence of ammonium ions.

• Lead acetate: The presence of lead ions can be confirmed by adding a few drops of dilute (1%) aqueous potassium chromate solution to the salt solution. A yellow coloration indicates the presence of lead ions.

• Calcium carbonate: The presence of calcium ions can be confirmed by adding a few drops of dilute (1%) hydrochloric acid to the salt solution. Carbon dioxide gas is evolved and the solution turns milky due to the formation of calcium chloride.

• Ammonium carbonate: The presence of ammonium ions can be confirmed by adding a few drops of dilute (1%) aqueous ferric chloride solution to the salt solution. A deep blue coloration indicates the presence of ammonium ions.

• Zinc sulphate: The presence of zinc ions can be confirmed by adding a few drops of dilute (1%) aqueous sodium hydroxide solution to the salt solution. A white precipitate indicates the presence of zinc ions.

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