Chemistry Flashcards
1
Q
What is the test for halide ions (Cl- ,Br-,I-)
A
Add silver nitrate
Precipitate forms …
-chlorine = white
-bromine= cream
-iodine = yellow
2
Q
What is a sulphate ion
A
SO4 ^-2
3
Q
What is the test for a sulphate ion
(SO4 ^-2)
A
Add barium nitrate
White precipitation (barium sulphate) forms = sulphate ions are present
4
Q
What is a carbonate ion
A
CO3 ^-2
5
Q
What is the test for carbonate ions
A
Add dilute nitric acid
Bubbles produced turn lime water cloudy =carbonate ions are present
6
Q
What is a ammonium ion
A
NH4 +
7
Q
What is electronegativity
A
Ability of a atom to attract a pair of electrons in a covalent bond
