Qualitative Tests for Anions Quiz

Which of the following tests is NOT used for identifying anions?

• Flame test

• Precipitation

• Reaction with acids

• Use of indicators

What color precipitate does silver bromide form?

• Creamy

• Yellowish

• White

• Blue

Which ion produces a blue precipitate when reacted with copper ions?

• Iron(II) hydroxide

• Silver chloride

• Copper(II) hydroxide

• Iron(III) hydroxide

What is a common method to confirm the presence of acetate ions?

• Precipitation with silver ions

• Using red litmus paper

• Flame test

• Adding barium ions

What gas is produced when carbonate ions react with nitric acid?

• Oxygen

• Hydrogen

• Carbon dioxide

• Nitrogen

Which ion is identified by a white precipitate with acidified barium ions?

• Acetate

• Carbonate

• Sulfate

• Phosphate

Why is it important to use an acidified solution when testing for sulfate ions?

• To neutralize the solution

• To increase the solubility of barium ions

• To prevent the formation of barium carbonate

• To enhance the color of the precipitate

What is the role of ammonia in the identification of phosphate ions?

• To neutralize the solution

• To drive the equilibrium towards phosphate formation

• To dissolve the precipitate

• To enhance the color of the precipitate

Which test can produce a yellow complex in the presence of phosphate ions?

• Precipitation with silver ions

• Flame test

• Reaction with nitric acid

• Ammonia midate phosphate test

Which ions will also produce basic solutions similar to phosphate ions?

• Sulfate and carbonate

• Acetate and hydroxide

• Chloride and bromide

• Iodide and nitrate