Testing for Bromide and Chloride Ions

Why is nitric acid added to the sample before testing for bromide and chloride ions?

• To remove impurities that might interfere with the test

• To increase the acidity of the solution

• To add chloride ions to the sample

• To neutralize the solution

What is the purpose of storing silver nitrate in brown bottles?

• To keep it at a constant temperature

• To protect it from light, which can cause it to break down

• To prevent it from freezing

• To prevent it from reacting with air

How can you visually distinguish between the precipitates formed by chloride and bromide ions?

• Chloride ions form a cream precipitate, while bromide ions form a white precipitate

• Chloride ions form a white precipitate, while bromide ions form a cream precipitate

• Both form a clear solution

• Both form a black precipitate

Why is hydrochloric acid not used to remove impurities when testing for chloride ions?

• It is not acidic enough

• It reacts too slowly

• It contains chloride ions, which can lead to false positives

• It is too expensive

What is the product responsible for the white precipitate when testing for chloride ions?

• Potassium chloride

• Silver chloride

• Sodium chloride

• Silver bromide