TESTS FOR IONS Flashcards
1
Q
cations
A
transition metal ions
ammonium
2
Q
anions (in order of test)
A
carbonate
sulfate
halide
3
Q
transition metal ion
A
NaOH- prod ppt
4
Q
ammonium ion- NH4+
A
heat gently w/sol being analysed
turns damp litmus paper red to blue
5
Q
carbonate ion- (CO3)2-
A
add dilute nitric acid(aq)
effervenscence as CO2 evolved
(CO3)2- + 2H+ -> CO2 + H2O
6
Q
sulfate ion- (SO4)2-
A
add Ba2+
white ppt- BaSO4
Ba2+ + SO42- -> BaSO4(s)
7
Q
halide ion- X-
A
add silver
Ag+ + X- -> AgX(s)
8
Q
chloride ion- Cl-
A
white ppt- AgCl
sol in dilute ammonia(aq)
9
Q
bromide ion- Br-
A
cream ppt- AgBr
sol in conc ammonia(aq)
10
Q
iodide ion- I-
A
yellow ppt- AgI
sol in conc ammonia(aq)
