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test for positive all are relatively the same aside from copper
copper(II) - (Cu2+): effect of aqueous sodium hydroxide
light blue ppt, insoluble in excess
copper(II) - (Cu2+): effect of aqueous ammonia
light blue ppt, soluble in excess, ges a dark blue solution
ammonium - (NH4-): effect of aqueous sodium hydroxide
ammonia produced on warning
calcium - (Ca2+): effect of aqueous sodium hydroxide
white ppt, insoluble in excess
calcium- (Ca2+): effect of aqueous ammonia
no ppt, or very slight white ppt
iron(ii) - (Fe2+): effect of aqueous sodium hydroxide
green ppt, insoluble in excess
iron(II) - (Fe2+): effect of aqueous ammonia
green ppt, insoluble in excess
iron(III) - (Fe3+): effect of aqueous sodium hydroxide
red-brown ppt, insoluble in excess
iron(III) - (Fe3+): effect of aqueous ammonia
red-brown ppt, insoluble in excess
zinc - (Zn2+): effect of aqueous sodium hydroxide
white ppt, soluble in excess, giving a colourless solution
zinc - (Zn2+): effect of aqueous ammonia
white ppt, soluble in excess, giving a colourless solution
Note 
Flashcard (116)