Qualitative Analysis Reactivity Trends Flashcards
1
Q
Identifying CO3^-2
Carbonate ions
A
+ dilute HNO3
Bubbles (CO2)
Limewater - cloudy
2
Q
Sulfate ions SO4^-2
A
+ BaCl2 (aq) / Br(NO3)2 (aq)
Aqueous barium chloride / nitrate
White ppt
3
Q
Halide ions
-Cl, -Br , -I
A
+ AgNO3 (aq)
Aqueous silver nitrate
Ppt forms Ag+ + X- > AgX (s)
4
Q
AgCl
A
White ppt
5
Q
AgBr
A
Cream
6
Q
AgI
A
Yellow
7
Q
Order of ion tests
A
Carbonate > sulfate > halide
8
Q
Reasons for order
A
CO3^2- form ppt in sulfate and halide tests
Sulfate produce ppt with halide test
9
Q
Ammonium ions
NH4+
A
\+ NaOH(aq) Warm Test gas - red litmus paper > blue Ammonia gas