Identification of Cations and Anions

Question 1

identify cations Mg2+ (aq),
Al3+ (aq), Ca2+ (aq), Cr3+ (aq),
Mn2+ (aq), Fe2+ (aq), Fe3+ (aq),
Cu2+ (aq), Zn2+ (aq), Ba2+ (aq),
Pb2+ (aq), NH4+ (aq);

Include the reactions with
OH-(aq), CO2-3(aq) and NH3(aq)
and confirmatory tests.

Question 1

identify cations: K+, Na+,
Ca2+, Ba2+, Cu2+ by their
flame tests;

Question 2

explain the principles upon
which the reactions in
Specific Objective 6.2 are
based;

Refer to equilibrium
concepts. Module 2,
Specific Objective 5.2.

Basic, amphoteric oxide
and complexation.

Question 3

write ionic equations for
the reactions in Specific
Objective 6.2;

Include state symbols.

Question 4

identify anions:
CO32-, NO3-’, SO42-, SO32-(aq),
Cl-, Br-, l-, CrO4-; and,

Include the reactions with
HCl(aq), conc H2SO4, Pb2+ (aq),
Ag+ (aq), followed by NH3(aq),
Ca(OH)2(aq), Ba2+ (aq),
followed by dilute acid.
For NO3-’ use copper
turnings and conc. H2SO4 or
add aluminium (powder) or
zinc (powder) in the
alkaline solution and
confirmatory tests for
gases where applicable.

Question 5

write ionic equations for
the reactions in Specific
Objective 6.5.

Include state symbols.