Some Important Qualitative Analysis Tests And Results.........

Hello MyRank Viewers, here are Some Important Qualitative Analysis Tests and Results

1. CHARCOAL CAVITY TEST:

Residue	Metallic Bead	Inference
Yellow when hot, white when cold		Zn2+
Brown when hot, yellow when cold	Green bead, Makes the paper black	Pb2+
No characteristics residue	Red beads / scales	Cu2+
White residue, glows on heating		Ba2+/ Sr2+/ Ca2+/ Mg2+
Black residue		Nothing definite.

2. COBALT NITRATE TEST:

Metal	Coloured mass	Colour
Zn	ZnO.CoO	Rinmann’s Green
Al	Al2O3.CoO	Blue
Mg	MgO.CoO	Pink
Sn	SnO.CoO	Bluish Green

3. FLAME TEST:

Colour of flame	Inference
Crimson Red	Li
Golden Yellow	Na
Violet	K
Brick Red	Ca
Dark Crimson Red	Sr
Apple Green	Ba
Green with Blue centre	Cu

Note: Be, Mg do not give flame test because s are too strongly bounded to be excited.

4. BORAX BEAD TEST (Only for Coloured Salts):

Metal	Oxidising Flame		Reducing Flame
	Hot	Cold	Hot	Cold
Cu	Green	Blue	Colourless	Brown Red
Fe	Brown Yellow	Pale Yellow	Bottle Green	Bottle Green
Cr	Green	Green	Green	Green
Co	Blue	Blue	Blue	Blue
Mn	Violet	Red	Grey	Grey
Ni	Violet	Brown	Grey	Grey