JAMB - Chemistry (1993 - No. 12)
Water can be identified by the use of?
anhydrous copper (II) tetraoxosulphate (VI)
anhydrous sodium trioxocarbonate (IV)
potassium heptaoxochromate (VII)
copper (II) trioxocaronate (IV)
Објашњење
Anhydrous CuSO4 will turn blue with water