Ionic Equations
Worksheet
Thinking About Equations Ionically
Identify the ions that change during the reaction.
NaOH + HCl
→
NaCl + H2O
Ionic Changes
- Reacting Ions: H+(aq) and OH–(aq)
- Product formed: H2O(l)
-
Net Ionic Equation:
H+ + OH– → H2O
AgNO3 + NaI
→
AgI + NaNO3
Ionic Changes
- Reacting Ions: Ag+(aq) and I–(aq)
- Product formed: AgI(s)
-
Net Ionic Equation:
Ag+ + I– → AgI
3FeSO4 + 2Al
→
Al2(SO4)3 + 3Fe
Ionic Changes
- Reacting Species: Fe2+(aq) and Al(s)
- Products formed: Al3+(aq) and Fe(s)
-
Net Ionic Equation:
3Fe2+ + 2Al → 2Al3+ + 3Fe
3Mg + 2H3PO4
→
Mg3(PO4)2 + 3H2
Ionic Changes
- Reacting Species: Mg(s) and H+(aq)
- Products formed: Mg2+(aq) and H2(g)
-
Net Ionic Equation:
Mg + 2H+ → Mg2+ + H2
From Symbol Equations
2Na + MgCl2
→
Mg + 2NaCl
Answer
2Na + Mg2+
→
Mg + 2Na+
2HCl + Ba(OH)2
→
BaCl2 + 2H2O
Answer
H+ + OH–
→
H2O
2KBr + Cl2
→
2KCl + Br2
Answer
2Br– + Cl2
→
2Cl– + Br2
2Al + 3H2SO4
→
Al2(SO4)3 + 3H2
Answer
2Al + 6H+
→
2Al3+ + 3H2
Pb(NO3)2 + 2NaBr
→
2NaNO3 + PbBr2
Answer
Pb2+(aq) + 2Br–(aq)
→
PbBr2(s)
From Descriptions
The displacement of copper chloride by lead
Answer
Pb(s) + Cu2+(aq)
→
Pb2+(aq) + Cu(s)
The neutralisation reaction of phosphoric acid and barium hydroxide
Answer
H+(aq) + OH–(aq)
→
H2O(l)
(Or if assuming barium phosphate is insoluble: 6H+ + 2PO43- + 3Ba2+ + 6OH– → Ba3(PO4)2(s) + 6H2O)
The redox reaction between iron and sulfuric acid
Answer
Fe + 2H+
→
Fe2+ + H2
The precipitation reaction between sodium hydroxide and copper sulfate
Answer
Cu2+(aq) + 2OH–(aq)
→
Cu(OH)2(s)
The disproportionation of copper (I) sulfate, forming copper and copper (II) sulfate
Answer
2Cu+(aq)
→
Cu(s) + Cu2+(aq)
The acid-base reaction of the strong acid phosphoric acid and weak ethanoic acid
Answer
H+ + CH3COOH
→
CH3COOH2+