Ch 10 Oxides
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Oxides Chapter 10
Recap Acid + Base → Salt + Water Oxides
Acidic oxide
Hydroxides
Basic oxide
Amphoteric oxide
Neutral oxide
Acidic oxides Reacts
with water to produce acids.
e.g. SO3 + H2O → H2SO4 Acidic
oxides are non-metal oxides HO e.g. SO2 H2SO3 sulphurous acid 2
SO3
H2O
H2SO4
sulphuric acid
H2O
HNO3
nitric acid
CO2
H2O
H2CO3
carbonic acid
P4O10
H2O
H3PO4
phosphoric acid
NO2
H2O
Basic oxides some are
some are
insoluble
soluble Reacts
with water to produce alkalis.
e.g. Na2O + H2O → 2NaOH Basic
oxides are metal oxides soluble insoluble HO e.g. Na2ONaOH Al2O3, FeO, Fe2O3 2
K2O CaO
H2O H2O
KOH
ZnO
PbO, PbO2
Ca(OH)2
MgO,
CuO, Cu2O
Amphoteric oxides exhibit both acidic & basic properties reacts with
bases
reacts with
acids
e.g. 6HCl + Al2O3 → 2AlCl3 + 3H2O
(as a base)
Al2O3 + 2NaOH → 2NaAlO + H O 2 2 base
(as an acid)
acid
sodium aluminate
Amphoteric oxides e.g. Zinc oxide 2HCl + ZnO → ZnCl2 + H2O(as a base) ZnO + 2NaOH → Na2ZnO2 + H2O
(as an acid)
sodium zincate
e.g. Lead (II) oxide 2HCl + PbO → PbCl2 + H2O
(as a base)
PbO + 2NaOH → Na2PbO2 + H2O
(as an acid)
sodium plumbite
Amphoteric oxides e.g. Lead (IV) oxide 2HCl + PbO2 → PbCl4 + H2O
(as a base)
PbO2 + 2NaOH → Na2PbO3 + H2O (as an acid) sodium plumbate
Neutral oxides do not exhibit any acidic OR basic properties. e.g. H2O, CO, NO, N2O Carbon monoxide nitrogen (II) oxide nitrogen (I) oxide CO, NO & N2O are all insoluble in water.
Recap Acid + Base → Salt + Water Oxides
Acidic oxide
Hydroxides
Basic oxide
Amphoteric oxide
Neutral oxide
Acidic oxides Reacts
with water to produce acids.
e.g. SO3 + H2O → H2SO4 Acidic
oxides are non-metal oxides HO e.g. SO2 H2SO3 sulphurous acid 2
SO3
H2O
H2SO4
sulphuric acid
H2O
HNO3
nitric acid
CO2
H2O
H2CO3
carbonic acid
P4O10
H2O
H3PO4
phosphoric acid
NO2
H2O
Basic oxides some are
some are
insoluble
soluble Reacts
with water to produce alkalis.
e.g. Na2O + H2O → 2NaOH Basic
oxides are metal oxides soluble insoluble HO e.g. Na2ONaOH Al2O3, FeO, Fe2O3 2
K2O CaO
H2O H2O
KOH
ZnO
PbO, PbO2
Ca(OH)2
MgO,
CuO, Cu2O
Amphoteric oxides exhibit both acidic & basic properties reacts with
bases
reacts with
acids
e.g. 6HCl + Al2O3 → 2AlCl3 + 3H2O
(as a base)
Al2O3 + 2NaOH → 2NaAlO + H O 2 2 base
(as an acid)
acid
sodium aluminate
Amphoteric oxides e.g. Zinc oxide 2HCl + ZnO → ZnCl2 + H2O(as a base) ZnO + 2NaOH → Na2ZnO2 + H2O
(as an acid)
sodium zincate
e.g. Lead (II) oxide 2HCl + PbO → PbCl2 + H2O
(as a base)
PbO + 2NaOH → Na2PbO2 + H2O
(as an acid)
sodium plumbite
Amphoteric oxides e.g. Lead (IV) oxide 2HCl + PbO2 → PbCl4 + H2O
(as a base)
PbO2 + 2NaOH → Na2PbO3 + H2O (as an acid) sodium plumbate
Neutral oxides do not exhibit any acidic OR basic properties. e.g. H2O, CO, NO, N2O Carbon monoxide nitrogen (II) oxide nitrogen (I) oxide CO, NO & N2O are all insoluble in water.
