Chapter 6 Anions

Chloride

dissolve salt in deionised water

add silver nitrate solution

note precipitation formed

add ammonia solution to confirm presence of silver chloride

note dissaperance of precipiate

Chloride results

white precipiate formed, dissappers when ammonia solution added

Chloride

dissolve salt in deionised water

add silver nitrate solution

note precipitation formed

add ammonia solution to confirm presence of silver chloride

note dissaperance of precipiate

Chloride results

white precipiate formed, dissappers when ammonia solution added

Chloride key words

silver nitrate

ammonia solution

Sulfate and Sulfite ions

step 1

clear solution formed

add barium chloride solution

white precipiate formed

add dilute hydrochloric acid and not difference in solubility

Sulfate and Sulfite results

white precipiate remains, sulfate

dissolves, sulfite

Sulfate and Sulfite key words

barium chloride solution

dilute hydrochloric acid

Carbonate and Hydrogen carbonate ions

step 1

add hydrochloric acid

effervescence occur

bubble this through limewater to show carbon dioxide gas being produced

add magnesium sulphate and note diff in precipiation

Carbonate and Hydrogen carbonate results

precipiate forms, carbonate doesn’t form, hydrocarbon ate

Carbonate and Hydrogen carbonate key words

hydrochloric acid

effervescence occurs

bubble through limewater

carbon dioxide gas

magnesium sulphate

nitrate ions

step 1

add fresh ion sulfate

add concentrated sulphruic acid slowing down side of test tube

formation of brown rings at junction of liquids

nitrate results

brown ring formed, nitrate ions present

nitrate key words

fresh iron sulfate

concentrated sulphuric acid

brown rings

phosphate ions

step 1

add ammonium molybdate solution

add concentrated nitric solution

place in warm water

phosphate results

yellow precipitate formed

phosphate key words

ammonium molybdate solution

concentrated nitric acid

yellow precipiate