Tests Flashcards
Sodium hydroxide in aluminium
White precipitate, dissolves in excess forming a colourless solution
Sodium hydroxide in ammonium
Ammonia gas given of on warming, turns damp litmus paper blue
Sodium hydroxide in calcium
White precipitate, insoluble in excess
Sodium hydroxide in copper
Light blue precipitate, insoluble in excess
Sodium hydroxide in iron 2+
Green precipitate, insoluble in excess
Sodium hydroxide in iron 3+
Brown precipitate, insoluble in excess
Sodium hydroxide in zinc
White precipitate, dissolves in excess forming a colourless solution
Aqueous ammonia in aluminium
White precipitate, insoluble in excess
Aqueous ammonia in ammonium
none
Aqueous ammonia in calcium
No precipitate or very faint white precipitate
Aqueous ammonia in copper
light blue precipitate, dissolves in excess to give a deep blue solution
Aqueous ammonia in iron 2+
Green precipitate, insoluble in excess
Aqueous ammonia in iron 3+
Brown precipitate, insoluble in excess
Aqueous ammonia in zinc
White precipitate, dissolves in excess forming a colourless solution
Test for carbonate
add dilute hydrochloric acid