Flame test + Tests for ions Flashcards
1
Q
Ca2+ ion flame colour
A
Brick Red
1
Q
K+ ion flame colour
A
Purple
2
Q
Na+ ion flame colour
A
Orange
3
Q
Li+ ion flame colour
A
Red
4
Q
Describe the test for ammonia
A
add 3 drops of dilute sodium hydroxide solution
gently heat
if NH4+ is present - characteristic choking smell produced.
5
Q
Describe the test for carbonate ions
A
add 3 drops of dilute hydrochloric acid
bubble gas through limewater
if CO32- present, limewater turns cloudy
6
Q
Describe the test for sulfate ions
A
add 3 drops of dilute hydrochloric acid
add 3-4 drops of barium chloride solution
if SO42- present a white precipitate forms
7
Q
Describe the test for halide ions
A
Add 3 drops of dilute nitric acid
then add 3-4 drops of silver nitrate solution
