5. A more complex example where other atoms are involved. Balance the following reaction in basic solution. Br (aq) + Mn04 (aq) MnO, (s) + BrO;" (aq)

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5. A more complex example where other atoms
are involved. Balance the following reaction in
basic solution.
r (aq) + MnO4 (aq)
MnO, (s)+ BrO;" (aq)
TABLE 19.1 Standard Electrode Potentials at 25 °C
Reduction Half-Reaction
E'(V)
F + 20
H,0,(aq) + 2 H(aq)+2 e
2F(aq)
2.87
Stronger
oxidizing agent
Weaker
2 H,0
- PBSO (s) +2 H,0)
-Mn0(s)+ 2 H,0)
Mn (aq) 4 H,O)
- Auts)
1.78
reducing agent
PO,(s) + 4 H"(ag) + S0,2-(aq) + 2 e
1.69
Mno, (aq)+ 4 H'(aq) 3 e
Mno, (aa) + 8 H (aq)+5 e
Au (aq)+3e
PbO,(s)+ 4 H(aa) + 2 e
Cl,(g) + 2 e"
1.68
1.51
1.50
1.46
- P (ag) + 2 HO
- 2a(aq)
1.36
1.33
Cr0, (aq) + 14 H'(ag) + 6 e
0+ 4 H (aq) + 4 e
MnO(s)+4 H'(aq) +2 e
10, (aq) 6 H'(aq) + 5e
Br+2e
vo, (aq) + 2 H'(aq) + e
NO, (aq) + 4 H°(aq) + 3e
CIO+e
2 C"(aq) + 7 H,On
- 2 H,O1)
1.23
Mn (aq) + 2 HyOV)
121
ulae) + 3 H,0()
2 Br (ag)
- vo"(aq) +H,00
- NO + 2 H,O0
- CIO, (aa)
- Agis)
1.20
1.09
1.00
0.96
0.95
Ag"(aa) + e
0.80
Fe (aq) +
O+2 H'(aq)+2e
- Fe*(aq)
0.77
- H,O,(ag)
0.70
Mn0, Taa) + e
Mn0 (aa)
0.56
8) + 2 e
52r(ag)
0.54
Cu'(ag) + e
Cucs)
0.52
O + 2 H,O) + 4e
Cu (aa)+2e
0.40
- Cus)
(be).HO
0.34
- HSO,(ag) + H,00
0.20
so (ao) + 4 H"(aq) + 2 e
Cư* (aq) +e
- Cu'(aa)
0.16
Sn** (ag) + 2 e
S (aq)
0.15
2 H'(ag)+2 e
Fe (ag)+3e
Pb (aq)+2 e
Sn (aq) +2 e
N (aq)+2 e
C (ag)+2 e
Fe (aq) +2e
Cr (ag)+e
Cr"(aq)+3e
Zn (aq)+2 e
2 H,O+2e
Mn (aq)+2 e
AP (ag)+3e
Mg (aq) +2 e
Na (ao)+ e
Ca (ag)+2 e
-Hyl
- Fe(s)
-0.036
- Pb(s)
-0.13
- Snis)
-0.14
- N(s)
-0.23
- Cas)
-0.40
- Fes)
-0.45
- Cr* (ag)
-0.50
- Cris)
--0.73
Znts)
-0.76
- Hyl + 2 0H (aq)
-0.83
Mn(s)
-1.18
- AlS)
-1.66
- Mgis)
-2.37
- Nas)
-2.71
- Cas)
-2.76
Ba (ag) + 2 e
- Ba(s)
-2.90
K (aq) + e
- KIS)
-2.92
Weaker
Stronger
vaducina aannt
avidirina saant
U'lag) +e
U(s)
-3.04
Transcribed Image Text:5. A more complex example where other atoms are involved. Balance the following reaction in basic solution. r (aq) + MnO4 (aq) MnO, (s)+ BrO;" (aq) TABLE 19.1 Standard Electrode Potentials at 25 °C Reduction Half-Reaction E'(V) F + 20 H,0,(aq) + 2 H(aq)+2 e 2F(aq) 2.87 Stronger oxidizing agent Weaker 2 H,0 - PBSO (s) +2 H,0) -Mn0(s)+ 2 H,0) Mn (aq) 4 H,O) - Auts) 1.78 reducing agent PO,(s) + 4 H"(ag) + S0,2-(aq) + 2 e 1.69 Mno, (aq)+ 4 H'(aq) 3 e Mno, (aa) + 8 H (aq)+5 e Au (aq)+3e PbO,(s)+ 4 H(aa) + 2 e Cl,(g) + 2 e" 1.68 1.51 1.50 1.46 - P (ag) + 2 HO - 2a(aq) 1.36 1.33 Cr0, (aq) + 14 H'(ag) + 6 e 0+ 4 H (aq) + 4 e MnO(s)+4 H'(aq) +2 e 10, (aq) 6 H'(aq) + 5e Br+2e vo, (aq) + 2 H'(aq) + e NO, (aq) + 4 H°(aq) + 3e CIO+e 2 C"(aq) + 7 H,On - 2 H,O1) 1.23 Mn (aq) + 2 HyOV) 121 ulae) + 3 H,0() 2 Br (ag) - vo"(aq) +H,00 - NO + 2 H,O0 - CIO, (aa) - Agis) 1.20 1.09 1.00 0.96 0.95 Ag"(aa) + e 0.80 Fe (aq) + O+2 H'(aq)+2e - Fe*(aq) 0.77 - H,O,(ag) 0.70 Mn0, Taa) + e Mn0 (aa) 0.56 8) + 2 e 52r(ag) 0.54 Cu'(ag) + e Cucs) 0.52 O + 2 H,O) + 4e Cu (aa)+2e 0.40 - Cus) (be).HO 0.34 - HSO,(ag) + H,00 0.20 so (ao) + 4 H"(aq) + 2 e Cư* (aq) +e - Cu'(aa) 0.16 Sn** (ag) + 2 e S (aq) 0.15 2 H'(ag)+2 e Fe (ag)+3e Pb (aq)+2 e Sn (aq) +2 e N (aq)+2 e C (ag)+2 e Fe (aq) +2e Cr (ag)+e Cr"(aq)+3e Zn (aq)+2 e 2 H,O+2e Mn (aq)+2 e AP (ag)+3e Mg (aq) +2 e Na (ao)+ e Ca (ag)+2 e -Hyl - Fe(s) -0.036 - Pb(s) -0.13 - Snis) -0.14 - N(s) -0.23 - Cas) -0.40 - Fes) -0.45 - Cr* (ag) -0.50 - Cris) --0.73 Znts) -0.76 - Hyl + 2 0H (aq) -0.83 Mn(s) -1.18 - AlS) -1.66 - Mgis) -2.37 - Nas) -2.71 - Cas) -2.76 Ba (ag) + 2 e - Ba(s) -2.90 K (aq) + e - KIS) -2.92 Weaker Stronger vaducina aannt avidirina saant U'lag) +e U(s) -3.04
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