Analysis Flashcards
What is the test for sodium?
Flame test- Intense yellow flame
What is the test for potassium ions?
Flame test- Lilac flame
What is the test for calcium ions?
Flame test - dull orange/brick red flame
What is the test for ammonium ions?
Add solid/solution to sodium hydroxide solution, warm and test any gas with damp red litmus paper- if present litmus paper turns blue
What is the test for copper (II) ions?
Add sodium hydroxide to a solution of the unknown compound - if present blue precipitate of copper (II) hydroxide is formed
What is the test for iron (II) ions?
Add sodium hydroxide solution to a solution of the unknown compound- if present a moss green precipitate of iron (II) hydroxide is formed
What is the test for iron (III) ions?
Add sodium hydroxide solution to a solution of the unknown compound - if present foxy red/ red-brown precipitate of iron (III) hydroxide forms
What is the test for chloride ions?
Add silver nitrate solution and dilute nitric acid to a solution of the unknown compound - if present a white precipitate of silver chloride forms
What is the test for bromide ions?
Add silver nitrate solution and dilute nitric acid to a solution of the unknown compound - if present a cream precipitate of silver bromide forms
What is the test for lithium ions?
Flame test- red flame
What is the test for iodide ions?
Add silver nitrate solution and dilute nitric acid to a solution of the unknown compound, yellow compound of silver iodide forms
What is the test for sulphate ions?
Add barium chloride and dilute hydrochloric acid to a solution of the unknown compound, white precipitate of barium sulphate forms
What is the test for carbonate ions?
Add dilute hydrochloric acid. Test any gas given off with limewater
