anions test

How would you test for the chloride ion?

• Add silver nitrate to a chloride solution

• White precipitate formed

• Dissolves in ammonia

How would you distinguish between the sulfate and sulfite ion?

• Add barium chloride to sulfate and sulfite solutions

• White precipitate forms in both

• Add dilute hydrochloric acid to both - sulfate remains white, sulfite dissolves

How would you distinguish between the carbonate and hydrogencarbonate ion?

• Add hydrochloric acid to both

• Effervescence occurs

• Bubble this through limewater

• Add magnesium sulfate to carbonate and hydrogencarbonate solutions

• White precipitate forms in carbonate solution only

• Boil the hydrogencarbonate solution to make it cloudy.

How would you test for the Nitrate ion?

• Add iron(II) sulfate to a nitrate solution

• Add concentrated sulfuric acid

• Brown ring forms

How would you test for the phosphate ion?

• Add ammonium molybdate to a phosphate solution

• Add concentrate nitric acid

• Warm the solution and a yellow precipitate forms.