TEACHING LABORATORY
Chemical Reactions
VIRTUAL CHEMLAB
PERFORMANCE LABORATORY
The Laboratory
Challenge
The MCQ Challenge
ChemQuest
  VIRTUAL CHEMLAB
 


Preliminary Lab Manual

I. Colour and Texture of Unknown Solids

Colour & Texture of Solid
Inference

Orange crystals
K2Cr2O7

Purple crystals
KMnO4 (purple lustre)

Black crystals
Iodine crystals

White powder
CaCO3, ZnCO3, ZnO (when cold); Anhydrous CuSO4

Yellow powder

Lead(II) oxide, PbO as shown.

ZnO (yellow when hot and white when cold),

AgI (pale yellow ppt), PbI2 (bright yellow ppt).

 

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