Solubility of Silver Halides in Ammonia

The video tutorial addresses the environmental concern of water impurities, focusing on the presence of dissolved ions. It explains how to test for chloride, bromide, and iodide ions using aqueous silver nitrate, which forms silver halide precipitates with distinct colors. The tutorial also covers methods to distinguish between these precipitates using dilute and concentrated ammonia. Finally, it provides ionic equations for the reactions and summarizes the characteristics of each silver halide.

Why is it important to test for dissolved ions in water?

• To make water more colorful

• To ensure water is free from impurities

• To improve the taste of water

• To increase the water's temperature

What is the first step when testing unknown solids for ions?

• Add silver nitrate directly

• Heat the solid

• Dissolve the solid in water

• Add concentrated ammonia

What color is the precipitate formed when chloride ions are present?

• Yellow

• Blue

• White

• Cream

Which ion results in a cream-colored precipitate?

• Chloride

• Bromide

• Iodide

• Fluoride

How can you distinguish between silver chloride and silver bromide?

• By heating the precipitate

• By adding concentrated ammonia

• By adding dilute aqueous ammonia

• By adding more silver nitrate

What happens to silver chloride when dilute aqueous ammonia is added?

• It turns yellow

• It dissolves

• It remains unchanged

• It turns blue

Which silver halide does not dissolve in either dilute or concentrated ammonia?

• Silver bromide

• Silver iodide

• Silver fluoride

• Silver chloride

What is the solubility behavior of silver bromide in concentrated ammonia?

• It turns yellow

• It dissolves

• It remains unchanged

• It turns white

Which of the following is true about silver iodide?

• It dissolves in dilute ammonia

• It dissolves in concentrated ammonia

• It does not dissolve in any ammonia

• It dissolves in both dilute and concentrated ammonia

What is the final conclusion about the solubility of silver halides in ammonia?

• All dissolve in dilute ammonia

• All dissolve in concentrated ammonia

• None dissolve in any ammonia

• Only silver chloride dissolves in dilute ammonia