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Chemistry 1 – Ch. 4 Lecture Worksheet Assigning Oxidation States 23) Assign an oxidation state to each atom in each element, ion, or compound. a. Cl2 b. Na+ c. KF d. CO2 e. SO42- f. K2O2 Assign an oxidation state to each atom in each element, ion, or compound. a. Cr b. Cr3+ c. CCl4 d. SrBr2 e. SO3 f. NO3- Using Oxidation States to Identify Oxidation and Reduction 24) Use oxidation states to identify the element that is oxidized and the element that is reduced in the following redox reaction. Mg(s) + 2 H2O(l) ? Mg(OH)2(aq) + H2(g) 25) Determine whether or not each reaction is a redox reaction. If the reaction is a redox reaction, identify which element is oxidized and which is reduced. (a) Hg2(NO3)2(aq) + 2 KBr(aq) ? Hg2Br2(s) + 2 KNO3(aq) (b) 4 Al(s) + 3 O2(g) ? 2 Al2O3(s) (c) CaO(s) + CO2(g) ? CaCO3(s) Identifying Redox Reactions, Oxidizing Agents, and Reducing Agents Determine whether or not each reaction is a redox reaction. For all redox reactions, identify the oxidizing agent and the reducing agent. 2 Li(s) + Cl2(g) ? 2 LiCl(s) 2 Al(s) + 3 Sn2+(aq) ? 2 Al3+(aq) + 3 Sn(s) Pb(NO3)2(aq) + 2 LiCl(aq) ? PbCl2(s) + 2 LiNO3(aq) C(s) + O2(g) ? CO2(g) Writing Equations for Combustion Reactions Write a balanced equation for the complete combustion of liquid C2H5SH

          Chemistry 1 – Ch. 4 Lecture Worksheet
Assigning Oxidation States
23) Assign an oxidation state to each atom in each element, ion, or compound.
a. Cl2 b. Na+ c. KF d. CO2 e. SO42- f. K2O2

Assign an oxidation state to each atom in each element, ion, or compound.
a. Cr b. Cr3+ c. CCl4 d. SrBr2 e. SO3 f. NO3-

Using Oxidation States to Identify Oxidation and Reduction
24) Use oxidation states to identify the element that is oxidized and the element that is reduced in the
following redox reaction.
Mg(s) + 2 H2O(l) ? Mg(OH)2(aq) + H2(g)

25) Determine whether or not each reaction is a redox reaction. If the reaction is a redox reaction, identify
which element is oxidized and which is reduced.
(a) Hg2(NO3)2(aq) + 2 KBr(aq) ? Hg2Br2(s) + 2 KNO3(aq)
(b) 4 Al(s) + 3 O2(g) ? 2 Al2O3(s)
(c) CaO(s) + CO2(g) ? CaCO3(s)

Identifying Redox Reactions, Oxidizing Agents, and Reducing Agents
Determine whether or not each reaction is a redox reaction. For all redox reactions, identify the oxidizing
agent and the reducing agent.
2 Li(s) + Cl2(g) ? 2 LiCl(s)
2 Al(s) + 3 Sn2+(aq) ? 2 Al3+(aq) + 3 Sn(s)
Pb(NO3)2(aq) + 2 LiCl(aq) ? PbCl2(s) + 2 LiNO3(aq)
C(s) + O2(g) ? CO2(g)

Writing Equations for Combustion Reactions
Write a balanced equation for the complete combustion of liquid C2H5SH

Chemistry 1 – Ch. 4 Lecture Worksheet
Assigning Oxidation States
23) Assign an oxidation state to each atom in each element, ion, or compound.
a. Cl2 b. Na+ c. KF d. CO2 e. SO42- f. K2O2

Assign an oxidation state to each atom in each element, ion, or compound.
a. Cr b. Cr3+ c. CCl4 d. SrBr2 e. SO3 f. NO3-

Using Oxidation States to Identify Oxidation and Reduction
24) Use oxidation states to identify the element that is oxidized and the element that is reduced in the
following redox reaction.
Mg(s) + 2 H2O(l) ? Mg(OH)2(aq) + H2(g)

25) Determine whether or not each reaction is a redox reaction. If the reaction is a redox reaction, identify
which element is oxidized and which is reduced.
(a) Hg2(NO3)2(aq) + 2 KBr(aq) ? Hg2Br2(s) + 2 KNO3(aq)
(b) 4 Al(s) + 3 O2(g) ? 2 Al2O3(s)
(c) CaO(s) + CO2(g) ? CaCO3(s)

Identifying Redox Reactions, Oxidizing Agents, and Reducing Agents
Determine whether or not each reaction is a redox reaction. For all redox reactions, identify the oxidizing
agent and the reducing agent.
2 Li(s) + Cl2(g) ? 2 LiCl(s)
2 Al(s) + 3 Sn2+(aq) ? 2 Al3+(aq) + 3 Sn(s)
Pb(NO3)2(aq) + 2 LiCl(aq) ? PbCl2(s) + 2 LiNO3(aq)
C(s) + O2(g) ? CO2(g)

Writing Equations for Combustion Reactions
Write a balanced equation for the complete combustion of liquid C2H5SH

Added by Remedios M.

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