Testing for Anions

Why can't you use hydrochloric or sulfuric acids to test for anions?

• they don't react

• you need to test for both chloride and sulfate ions so can't use an acid that contains these

• they yield different products

• the pH is too low

How do you test for carbonate ions?

• Add acid

• Add silver nitrate

• Add barium chloride

• Litmus paper

What is a positive test for carbon dioxide?

• limewater turns cloudy

• limewater goes clear

• add barium sulfate

• add silver nitrate

Silver nitrate and nitric acid are used to test for....

• Ammonium ions

• Carbonate ions

• halide ions

• Sulfate ions

A yellow precipitate formed when an unknown solution is added to silver nitrate and nitric acid indicates the presence of which ion?

• iodide

• chloride

• bromide

• fluoride

A cream precipitate formed when an unknown solution is added to silver nitrate and nitric acid indicates the presence of which ion?

• chloride

• iodide

• bromide

• fluoride

A white precipitate formed when an unknown solution is added to silver nitrate and nitric acid indicates the presence of which ion?

• bromide

• iodide

• fluoride

• chloride

Which ion turns red litmus paper blue?

• chloride

• sulfate

• hydroxide

• phosphate

Adding barium chloride to an unknown solution will indicate the presence of....

• sulfate

• halide

• carbonate

• nitrate

A gas produced when nitric acid is added to an unknown solution indicates the presence of....

• suulfate

• carbonate

• phosphate

• nitrate