Oxidation Reduction PowerPoint
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Chapter 6: Chemical Reactions
Identify redox reactions.
Identify and write equations for
combustion reactions.
A reaction can be classified as a redox
reaction if it meets any one of these
requirements.
A substance reacts with elemental oxygen
(combustion).
A metal reacts with a nonmetal.
During single displacement reactions.
More generally, one substance transfers
electrons to another substance.
2Na(s) + Cl2(g) 2NaCl(s)
Na + Cl Na+ + Cle-
Combustion reactions are a type of
redox reaction.
Combustion reactions are characterized
by the reaction of a substance with O2
to form one or more oxygen-containing
compounds, often including water.
Combustion reactions are exothermic
(they emit heat).
Compounds containing carbon and
hydrogen always form carbon dioxide
and water upon combustion.
CH4(g) + O2(g)
2Mg(s) + O2(g) 2MgO(s)
Mg + O
e- e-
2+
Mg
2+O
2Al(s) + Fe2O3(s) 2Fe(s) + Al2O3(s)
Al + Fe3+ Fe + Al3+
e- -ee
For each reaction, show how electrons are gained and
lost:
2Na (s) + Br2(l) 2NaBr (s)
2Ca (s) + O2(g) 2CaO (s)
Predict the products for the following combustion
reactions:
C6H14(l) + O2(g)
Cu(s) + O2(g)
Classify each of the following reactions in as many ways
possible.
2K (s) + Cl2(g) 2KCl (s)
2Mg (s) + O2(g) 2MgO (s)
Classify each of the following reactions in as many ways
possible.
Fe2O3(s) + 2Al(s) Al2O3(s) + 2Fe(s)
HNO3(aq) + NaOH(aq) → H2O(l) + NaNO3 (aq)
Ba(NO3)2(aq) + (NH4)2SO4(aq)
HCl(aq) + KOH(aq)
Na(s) + Cl2(g)
FeCl3(aq) + NaOH(aq)
Zn(s) + HNO3(aq)
C6H14(l) + O2(g)
CuSO4(aq) + Na2CO3(aq)
HClO4(aq) + NaOH(aq)
NI3(s)
ZnCl2(aq) + Mg(s)
H2SO4(aq) + Ba(OH)2(aq)
KNO3(aq) + BaCl2(aq)