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Identification of ions by chemical and spectroscopic means key terms
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Identification of ions by chemical and spectroscopic means
Key terms
iron(III) ion test
A qualitative test that involves adding sodium hydroxide to a solution containing iron(III) ions, resulting in the formation of a brown precipitate.
brown precipitate
The solid formed when iron(III) ions react with sodium hydroxide, indicating the presence of iron(III) ions in a solution.
precipitate
A solid that forms and settles out of a liquid mixture during a chemical reaction.
sodium hydroxide
A strong alkali used in chemical tests to identify metal ions by forming precipitates.
metal hydroxide precipitate test
A qualitative test using sodium hydroxide solution to identify metal ions based on the formation of colored precipitates.
flame test
A qualitative test that identifies metal ions by the characteristic color produced when the ion is heated in a flame.
sodium hydroxide
A strong base used in metal ion tests to form precipitates.
precipitate
An insoluble solid that forms when two solutions react.
carbonate ion test
A qualitative test that involves adding dilute acid to a sample to check for the presence of carbonate ions, which produce carbon dioxide gas.
effervescence
The bubbling or fizzing that occurs when carbonate ions react with dilute acid, indicating the release of carbon dioxide.
carbonate ion
A polyatomic ion with the formula CO₃²⁻ that reacts with dilute acid to release carbon dioxide gas.
dilute acid
An aqueous solution of an acid with a low concentration, used to react with carbonate ions to produce carbon dioxide.
carbon dioxide
A colorless gas produced when carbonate ions react with dilute acid.
limewater
A dilute solution of calcium hydroxide used to test for carbon dioxide.
limewater
A clear solution of calcium hydroxide used to test for carbon dioxide; it turns milky in the presence of carbon dioxide.
carbon dioxide
A colorless gas produced when carbonate ions react with dilute acid; it can be confirmed by its effect on limewater.
effervescence
The formation of bubbles or fizzing when a carbonate reacts with an acid, indicating the presence of carbonate ions.
limewater
A dilute solution of calcium hydroxide used to test for carbon dioxide; it turns milky in the presence of carbon dioxide.
carbonate ion test
A qualitative test to identify the presence of carbonate ions by reacting with dilute acid to produce carbon dioxide.
sulfate and halide ion tests
Qualitative tests used to identify sulfate and halide ions, which differ from the carbonate ion test in their chemical reactions.
carbonate ion test
A qualitative test to identify the presence of carbonate ions by reacting with dilute acid to produce carbon dioxide.
safety precautions
Measures taken to ensure safety while carrying out the carbonate ion test, including the use of appropriate personal protective equipment.
Sulfate ion test
A qualitative test that uses barium chloride solution to identify the presence of sulfate ions by forming a white precipitate.
Barium chloride
A chemical compound used in the sulfate ion test to react with sulfate ions, resulting in a white precipitate of barium sulfate.
Barium chloride test
A qualitative test for sulfate ions where the sample is acidified before adding barium chloride solution.
Acidification
In Sulfate ions, Acidification means the process of adding acid to a sample to enhance the detection of sulfate ions using barium chloride. Use this term when explaining explain that the sample is acidified before adding barium chloride solution in Identification of ions by chemical and spectroscopic means. Keep the definition tied to Chemical analysis by separating observations, conclusions, test reagents, substances, ions, gases, and chromatography terms where relevant.
sulfate ion
An ion that produces a white precipitate of barium sulfate when reacted with barium chloride solution.
white precipitate
A solid that forms and settles out of a solution, indicating the presence of sulfate ions when barium chloride is added.
sulfate ion test
A qualitative test that uses acidified barium chloride solution to identify the presence of sulfate ions by forming a white precipitate.
white precipitate
A solid that forms and settles out of a solution, indicating the presence of sulfate ions when barium chloride is added to an acidified sample.
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