QUALITATIVE ANALYSIS

plz ne1 try ??????????????

i found in jee syl

For Ca²⁺
To the original solution add solid NH₄Cl , NH₄OH and (NH₄)₂CO₃ solution.

White ppt. is formed

Dissolve a part of white ppt. in dil. acetic acid . Boil off CO₂
Add ammonium oxlate to the above solution .

white ppt. confirms Ca²⁺

Or you can perform flame test with the salt

brick red flame confirms -Ca²⁺

The Bi3+ that precipitates in an ammoniacal solution to produce
white bismuth hydroxide is dissolved and confirmed with the addition oí freshly prepared sodium stannite, Na2Sn(OH)4, in a basic solution.
The Bi3+ ion is reduced to black bismuth metal, confirming the presence of bismuth inthe sample.

we can also use II group reagent for Bi+3

thnx.....

wat abt

Cr³⁺

for Cr3+

ppt of Cr3+ is soluble in NaOH+Br2 water and addn of BaCl2 gives yellow ppt.

first clue is : Cr(OH)3 forms a dirty green ppt.

CHECK THIS OUT

http://targetiit.com/iit_jee_forum/posts/important_information_2774.html