Question

Name any two tests for ammonia ?

Answer 1

1) Ammonia gas, NH3(g) has no colour.

2) Ammonia gas has a characteristic pungent smell.

3) Ammonia gas will turn moist litmus paper from red to blue,
and moist universal indicator paper to blue.
It is alkaline in water, pH = 11·5.

4) Ammonia gas will put out a lit splint.

Specific Test for Ammonia Gas
Ammonia will form a white smoke
in the presence of hydrogen chloride gas, HCl(g).
The white smoke is ammonium chloride, NH4Cl(s).
Hope will help you.

Answer 2

Hey !!

TESTS FOR AMMONIA

• It turns moist red litmus blue and moist turmeric paper brown.
• It gives brown precipitate with ''NESSLER'S REAGENT''
• With a frop of HCl it produces dense white fumes of ammonium chloride.
• With copper sulphate solution, it gives a deep blue solution.
• It gives yellow precipitate with chloroplatinic acid.

                      H₂PtCl₆ (Chloroplatinic acid) + 2 NH₃ ----> (NH₄)PtCl₆ (Amm. Chloroplatinic (yellow ppt.)

HOPE IT HELPS YOU !!