Anion Detection Tests Quiz

What is the visual indicator that confirms the presence of carbonate ions in a solution?

• Emission of a strong odor

• Formation of a white precipitate

• Solution turns blue

• Lime water becomes cloudy

Which compound is formed when barium ions react with sulfate ions?

• Barium nitrate

• Barium chloride

• Barium sulfate

• Barium carbonate

Why is dilute hydrochloric acid added before testing for sulfate ions?

• To neutralize the solution

• To increase the temperature of the solution

• To remove impurities like carbonate and sulfite ions

• To enhance the color of the precipitate

What color precipitate indicates the presence of chloride ions when using the silver nitrate test?

• Yellow

• White

• Cream

• Blue

Which acid is used to remove impurities before testing for halide ions?

• Sulfuric acid

• Hydrochloric acid

• Acetic acid

• Nitric acid