Calculate the solubility of PbSO 4 whose K sp = 2.0 x 10 -14 :
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Transcript of Calculate the solubility of PbSO 4 whose K sp = 2.0 x 10 -14 :
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Calculate the solubility of
PbSO4 whoseKsp = 2.0 x 10-14:
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Oxidation Reduction Reactions(REDOX)
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REDOX Reactions
•Chemical reactions in which electrons
are transferred
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Oxidation•The act of losing
electrons
•Oxidation number increases
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Reduction•The act of gaining
electrons
•Oxidation number decreases
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REDOX Fact•You cannot have oxidation without
reduction or reduction without oxidation
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Oxidizing Agent•A substance that oxidizes another
•The oxidizing agent will be reduced
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Reducing Agent•A substance that
reduces another
•The reducing agent will be oxidized
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Balancing REDOX Reactions
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Balancing Redox Rxns1)Determine all ox #
2)Determine elements being oxidized & reduced
3)Divide rxn into half-rxns
4)Balance half-rxns
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Balancing Half-Rxnsa)Balance redox elements
b)Balance ox # with e-
c)Balance e- between the two half-rxns
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Balancing Half-Rxnsd)Balance total charge
with H+ or OH-
e)Balance H’s with waterf) Check balance with oxygen
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Balancing Redox Rxns5) Add the two half-reactions
a)Cancel like substances from each side of the full reaction
b)Check work
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Balance Redox Rxns:
MnO2 + Cl-1
Mn+2 + Cl2
in acid
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Balance Redox Rxns:
Cr2O7-2 + NH3
Cr+3 + NO3-1
in base
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Balance Redox Rxns:
MnO4-1 + N2O3
Mn+3 + N2O5
in base
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Balance Redox Rxns:
HNO3 + Cu
N2O + Cu+2
in acid
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Balance Redox Rxns:
SO2 + Pb(OH)2
SO3 + Pb
in base
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Balance Redox Rxns:
MnO2 + P4
Mn2O7 + PH3
in acid
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Balance Redox Rxns:
FeCl2 + KNO3
FeCl3 + KNO
in base
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Balance Redox Rxns:
SnF2 + KIO4
KI + SnF4
in acid
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Balance Redox Rxns:
IO3-1 + I-1
I3-1
in acid
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Balance Redox Rxns:
PbBr4 + K2O
PbBr2 + O2
in acid
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Balance Redox Rxns:
Ca + VO4-3
CaO + V+2
in acid
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Balance Redox Rxns: Fe(OH)3 + Cr(OH)4
-1
Fe(OH)2 + CrO4-2
in base
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Balance Redox Rxns:
Ni(OH)2 + N2H4
Ni + N2
in base
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Balance Redox Rxns:
K3PO4 + Cr+2
P2O3 + K2CrO3
in acid
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Balance Redox Rxns:
H2SO4 + Cr+2
SO + H2Cr2O7
in acid
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Balance Redox Rxns:
PH3 + KMnO4
P2O5 + Mn2O3
in KOH