qualitative analysis Flashcards
1
Q
what is the test for ammonia
A
warm with NaOH and use damp red litmus paper
a positive result leads to colour change to blue.
2
Q
what is the test for carbonate
A
add an acid and observe effervesce as carbon dioxide is being released. this myst be done before testing for chloride or sulphate ions as this will give a false positive.
3
Q
how do you test for a sulphate
A
use BaNO3 and observe a white ppte forming.
4
Q
how do you test for halides Cl-
A
add silver nitrate and observe a white ppte (Cl-) and ppte will dissolve in dilute and concentrated ammonia.
