P1 test revision Flashcards
sodium hydroxide test- Cu (II)2+
blue precipitate
sodium hydroxide test- Ca2+
white precipitate
sodium hydroxide test- Mg2+
white precipitate
sodium hydroxide test- Al3+
white precipitate
sodium hydroxide test- Fe2+
green precipitate
sodium hydroxide test-Fe3+
brown precipitate
How to carry out the sodium hydroxide test
Add a few drops of sodium hydroxide to your solution and note the colour of the precipitate and then add the excess sodium hydroxide and note any changes
protons + neutrons =
mass number
sulphate test
Pour around 1cm of sodium solutions into 5 different test tubes. Add a few drops of hydrochloric acid to each solution. Then add 1cm depth of barium chloride solution.
sulphate test- CO3 ^2-
(forms bubbles when acid added)
sulphate test- SO4 ^2-
no reaction
sulphate test - Cl 1-
no reaction
sulphate test - Br 1-
no reaction
sulphate test - I 1-
no reaction
