Anion Cl-  and Cation Ba2+ 

S.No.

Treatment

Observation

Inference

1

Mixture + dil. H₂SO₄ + Heat

No reaction

Week acidic group absent

2

Mixture + conc. H₂SO₄ + Heat

Colourless gas with pungent smell

Strong acidic group present Cl^– may be

3

Confirmatory Test

Silvernitrate test

White ppt. is formed which is soluble in excess of NH₄OH

Cl^– is confirmed

Chromyl chloride test

Mixture + solid K₂Cr₂O₇ + conc. H₂SO₄ + Heat

Dark reddish brown gas is evolved

Pass the evolved in NaOH solution

Solution of NaOH is change to yellow colour

The above solution + CH₃COOH + (CH₃COO)₂Pb

Yellow ppt is formed

Cl^– is confirmed

S.No.

Treatment

Observation

Inference

1

Mixture + NaOH solution + Heat

No ammonia smell

Zero group absent

2

Original solution of Mixture + dil HCl

No ppt. is formed

1^st group absent

3

Pass H₂S gas in above solution

No ppt. is formed

2^nd group absent

4

Boil the above solution off H₂S gas

Bring a filter paper dipped in lead acetate solution

Filter paper not turn black

H₂S gas excaped

5

The above solution+ conc. HNO₃+ boil + cool + solid NH₄Cl + NH₄OH in excess

No ppt. is formed

3^rd group absent

6

Pass H₂S gas in above solution

No ppt. is formed

4^th group absent

7

Boil the above solution off H₂S gas

Bring a filter paper dipped in lead acetate solution

Filter paper not turn black

H₂S gas excaped

8

Above solution +NH₄OH + (NH₄)₂CO₃ solution

White ppt. is formed

5^th group present

Ba²⁺, Sr²⁺, Ca²⁺ may be

9

The white ppt. dessolve in acetic acid solution and divide into three parts

Ist part + K₂CrO₄

yellow ppt is obtained

Ba²⁺ is present

10

Dry Test

Dippted the platinum wire in dil. HCl and ignite it with ppt.

Green apple like flame is obtained

Ba²⁺ is present