drill: calculate the solubility of pbso 4 k sp = 2.0 x 10 -14
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Drill: Calculate the solubility of PbSO 4 K sp = 2.0 x 10 -14. Review Drill & Check HW. CHM II HW. Review PP-27 Complete the attached assignment & turn it in tomorrow. Oxidation Reduction Reactions (REDOX). REDOX Reactions. Chemical reactions in which electrons are transferred. - PowerPoint PPT PresentationTRANSCRIPT
Drill: Calculate the solubility of
PbSO4
Ksp = 2.0 x 10-14
Review Drill&
Check HW
CHM II HW•Review PP-27
•Complete the attached assignment & turn it in tomorrow.
Oxidation Reduction Reactions(REDOX)
REDOX Reactions
•Chemical reactions in which electrons
are transferred
Chemical Charge• A positive, neutral, or
negative number assigned to a particle & determined by
the difference between the # of protons & electrons
Oxidation Number
•The charge of a single atom
Oxidation•The act of losing
electrons
•Oxidation number increases
Reduction•The act of
gaining electrons
•Oxidation number decreases
REDOX Fact•You cannot have oxidation without
reduction or reduction without oxidation
Oxidizing Agent•A substance that oxidizes another
•The oxidizing agent will be reduced
Reducing Agent•A substance that
reduces another
•The reducing agent will be oxidized
Determine elements being: oxidized & reduced
MnO4-1 + NH3
MnO2 + NO2-1
Drill: determine ox # of each element:
MnO4-1 + Fe
Mn2O3 + FeO
Balance the following in Acid:
MnO4-1 + Fe
Mn2O3 + FeO
Balancing REDOX Reactions
Balancing Redox Rxns1)Determine all ox #
2)Determine elements being oxidized & reduced
3)Divide rxn into half-rxns
4)Balance half-rxns
Balancing Half-Rxnsa)Balance redox elements
b)Balance ox # with e-
c)Balance e- between the two half-rxns
Balancing Half-Rxnsd)Balance total charge
with H+ or OH-
e)Balance H’s with waterf) Check balance with oxygen
Balancing Redox Rxns5) Add the two half-reactions
a)Cancel like substances from each side of the full reaction
b)Check work
Drill: Determine Ox #:
MnO2 + Cl-1
Mn+2 + Cl2
in acid
Balance Redox Rxn:
MnO2 + Cl-1
Mn+2 + Cl2
in acid
Review Drill&
Check HW
CHM II HW•Review PP-27
•Complete the attached assignment & turn it in on the next school day.
Balance Redox Rxn:
Cr2O7-2 + NH3
Cr+3 + NO3-1
in base
Balance REDOX Rxn:
MnO4-1 + N2O3
Mn+2 + N2O5
in acid
Drill: Determine Ox # for All
MnO4-1 N2O3
Mn+2 N2O5
Review & Collect Drill
& HW
CHM II HW•Review PP-27
•Complete the attached assignment & turn it in on the next school day.
Balance Redox Rxn:
FeCl2 + KNO3
FeCl3 + KNO2
in base
Balance Redox Rxn:
SO2 + Pb(OH)2
SO3 + Pb
in base
Drill Balance the following half-reaction:
H2O O2
In acid
Review & collect Drill
& HW
CHM II HW•Review PP-27
•Complete the attached assignment & turn it in on the next school day.
Balance Rxn:
HNO3 + Cu
N2O + Cu+2
Balance Redox Rxn:
Fe(NO3)3 + Cr(OH)4-1
Fe(NO3)2 + CrO4-2
Balance Redox Rxn:
SnF2 + KIO4
KI + SnF4
in acid
Balance Redox Rxn:
IO3-1 + I-1
I3-1
in acid
Balance Redox Rxn:
MnO2 + P4
Mn2O7 + PH3
in acid
Balance Redox Rxn:
PbBr2 + O2 + K+
PbBr4 + K2O
in acid
Balance Redox Rxn:
Ca + VO4-3
CaO + V+2
in acid
Balance Redox Rxn:
Ni(OH)2 + N2H4
Ni + N2
in base
Balance Redox Rxn:
P2O3 + K2CrO3
K3PO4 + Cr+2
in acid
Balance Redox Rxn:
SO + H2Cr2O7
H2SO4 + Cr+2
Balance Redox Rxn:
PH3 + KMnO4
P2O5 + Mn2O3
in KOH