Question

Which test is the confirmatory test for ammonium ion?

Select one: 

Wet blue litmus paper and sodium hydroxide solution (it will turn red) 

Wet red litmus paper and sodium hydroxide solution (it will turn blue)

Dry red litmus paper and hydrochloric acid (it will turn blue) 

Dry red litmus paper and hydrochloric acid (it will turn red)

Answer 1

The confirmatory test for ammonium ion is-

Wet red litmus paper and sodium hydroxide solution ( it will turns blue)

Explanation - for confirmatory test of ammonium ion , add pinch of sodium hydroxide in the sample solution and heat if ammonia is present in the sample then smell comes out as well as that vapours converts red litmus paper to blue.