Test for Halides (Cl-, Brx, l-) with Nitric Acid and Silver Nitrate Flashcards
1
Q
How do you gets for chloride, bromide or iodide ions?
A
Add dilute nitric acid followed by silver nitrate solution
2
Q
What does a chloride ion give?
A
A white precipitate of silver chloride
3
Q
What does a bromide ion give?
A
A cream precipitate of silver bromide
4
Q
What does a iodide ion give?
A
A yellow precipitate of silver iodide
5
Q
Why is the acid added?
A
To get rid of any carbonate or sulfite ions before the test
6
Q
What acid is used?
A
Nitric not HCl
7
Q
Equation for chloride:
A
Ag+ + Cl- —> AgCl
8
Q
Equation for bromide:
A
Ag+ + Br- —> AgBr
9
Q
Equation for iodide:
A
Ag+ + I- —> AgI
