Consider the following cell.Pt | H2(1 bar) | HCI(m) | AgCI(s) | AgAt 25.0°C, the emf values at various molalities are given by the following.m/(mol-kg-1)0.1220.05480.02600.01360.009270.005530.00317E/V0.3420.3810.4180.4500.4680.4940.521(a) Determine the value of E° graphically. Compare your value of E° with that listed in the table.E° from graph.2387X VE° from table4.0 .8X V(b) Calculate the mean activity coefficient (Y+) for HCl at 0.122 m. (Use the E° value from the table.)4.0.0011 Standard Reduction Potentials, E°, for Half-Cells at 298 K (pH = 0)aElectrodeElectrode reactionE/VElectrodeElectrode reactionE/VPt|F2|F-F(g) + 2e → 2F+2.87Pt|Cu2*, Cu*Cu2+ + e → Cu*+0.153Pt|Co3+, Co2+Co3+ + e→ Co²++1.92Ag|AgBr|BrAgBr + e - Ag + Br+0.0713Pt|Ce+, Ce3+Ce+ + e→ Ce3++1.72Pt|H,|H2H* + 2e → H,0.0Pt|MnOj, Mn2+Mno, + 8H* + 5e¯ → Mn2+ + 4H,O+1.507Pb|Pb2+Pb2+ + 2e → Pb-0.126Pt|Mn3*, Mn²+Mn3+ + e - Mn2++1,54Sn|Sn2+Sn2+ + 2e → Sn-0.138Au|Au³+Au3+ + 3e → Au+1.498Co|Co*Co2+ + 2e → Co-0.277Pt|C1,|CI-Cl,(g) + 2e → 2C1-+1.36Ti|TI*TI* + e - Tl-0.336Pb|PBSO,|SOPbSO, + 2e - Pb + SO-Pt|Cr,0;, Cr**Cr,0 + 14H* + 6e¯ → 2Cr+ + 7H,0+1.23-0.359Pt|T1³+, TI*T13+ + 2e- → TI-+1.252Cd|Cd2-Cd2+ + 2e → Cd-0.403Pt|O,, H,0+1.229Pt|Cr3+, Cr2+Cr+ + e → Cr2+O,(g) + 4H* + 4e¯ → 2H,0-0.41Pt|Br,, BrBr, + 2e → 2Br+1.087Fe|Fe2-Fe?+ + 2e - Fe-0.447Pt|Hg²*, Hg*2H92+ + 2e → Hg*+0.92Zn|Zn2+Zn2+ + 2e → Zn-0.762Hg|Hg2+Hg2+ + 2e - Hg+0.851Pt|H,O|H,, OH2H,0 + 2e → H, + 20H-0.828Ag|Ag*Ag* + e → Ag+0.800Mn|Mn²-Mn2+ + 2e- → Mn-1.180Pt|Fe3+, Fe2+Fe3+ + e → Fe2++0.771A1|A13-A13+ + 3e - Al-1.662Pt|I,, I-I, + 2e-→ 21Mg|Mg2-Mg2+ + 2e → Mg-2.372+0.536Pt|O2. OH-+0.401Na|Na*O,(g) + 2H,0 + 4e¯ → 40H-Na* + e → Na-2.714Pt|Fe(CN);, Fe(CN);Fe(CN) + e → Fe(CN)+0.36Ca|Ca2+Ca2+ + 2e → Ca-2.868Cu|Cu²*Cu2+ + 2e- → Cu+0.342Sr|Sr*Sr2+ + 2e- - Sr-2.899Pt|Hg|Hg,Cl,|CFHg,Cl, + 2e → 2Hg + 2C1-+0.268Ba|Ba2+Ba?+ + 2e → Ba-2.905Ag|AgC1|Cl-AgCl + e - Ag + CF+0.222K|K*K* + e → K-2.931Pt|Snt+, Sn2+Sn4+ + 2e → Sn2++0.151Li|Li*Li* + e → Li-3.05a Data mostly from CRC Handbook of Chemistry and Physics, 94th ed., Taylor-Francis/CRCPress, Boca Raton, FL, 2013.

Consider the following cell. Pt | H2(1 bar) | HCI(m) | AgCI(s) | Ag At 25.0°C, the emf values at various molalities are given by the following. m/(mol·kg-1) 0.122 0.0548 0.0260 0.0136 0.00927 0.00553 0.00317 E/V 0.342 0.381 0.418 0.450 0.468 0.494 0.521 (a) Determine the value of E° graphically. Compare your value of E° with that listed in the table. E° from graph .2387 E° from table 4.0.8 X V (b) Calculate the mean activity coefficient (Y:) for HCI at 0.122 m. (Use the E° value from the table.) 4.0 .0011

Consider the following cell. Pt | H2(1 bar) | HCI(m) | AgCI(s) | Ag At 25.0°C, the emf values at various molalities are given by the following. m/(mol·kg-1) 0.122 0.0548 0.0260 0.0136 0.00927 0.00553 0.00317 E/V 0.342 0.381 0.418 0.450 0.468 0.494 0.521 (a) Determine the value of E° graphically. Compare your value of E° with that listed in the table. E° from graph .2387 E° from table 4.0.8 X V (b) Calculate the mean activity coefficient (Y:) for HCI at 0.122 m. (Use the E° value from the table.) 4.0 .0011

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

100%

Consider the following cell.
Pt | H2(1 bar) | HCI(m) | AgCI(s) | Ag
At 25.0°C, the emf values at various molalities are given by the following.
m/(mol-kg-1)
0.122
0.0548
0.0260
0.0136
0.00927
0.00553
0.00317
E/V
0.342
0.381
0.418
0.450
0.468
0.494
0.521
(a) Determine the value of E° graphically. Compare your value of E° with that listed in the table.
E° from graph
.2387
X V
E° from table
4.0 .8
X V
(b) Calculate the mean activity coefficient (Y+) for HCl at 0.122 m. (Use the E° value from the table.)
4.0
.0011

Standard Reduction Potentials, E°, for Half-Cells at 298 K (pH = 0)a
Electrode
Electrode reaction
E/V
Electrode
Electrode reaction
E/V
Pt|F2|F-
F(g) + 2e → 2F
+2.87
Pt|Cu2*, Cu*
Cu2+ + e → Cu*
+0.153
Pt|Co3+, Co2+
Co3+ + e→ Co²+
+1.92
Ag|AgBr|Br
AgBr + e - Ag + Br
+0.0713
Pt|Ce+, Ce3+
Ce+ + e→ Ce3+
+1.72
Pt|H,|H
2H* + 2e → H,
0.0
Pt|MnOj, Mn2+
Mno, + 8H* + 5e¯ → Mn2+ + 4H,O
+1.507
Pb|Pb2+
Pb2+ + 2e → Pb
-0.126
Pt|Mn3*, Mn²+
Mn3+ + e - Mn2+
+1,54
Sn|Sn2+
Sn2+ + 2e → Sn
-0.138
Au|Au³+
Au3+ + 3e → Au
+1.498
Co|Co*
Co2+ + 2e → Co
-0.277
Pt|C1,|CI-
Cl,(g) + 2e → 2C1-
+1.36
Ti|TI*
TI* + e - Tl
-0.336
Pb|PBSO,|SO
PbSO, + 2e - Pb + SO-
Pt|Cr,0;, Cr**
Cr,0 + 14H* + 6e¯ → 2Cr+ + 7H,0
+1.23
-0.359
Pt|T1³+, TI*
T13+ + 2e- → TI-
+1.252
Cd|Cd2-
Cd2+ + 2e → Cd
-0.403
Pt|O,, H,0
+1.229
Pt|Cr3+, Cr2+
Cr+ + e → Cr2+
O,(g) + 4H* + 4e¯ → 2H,0
-0.41
Pt|Br,, Br
Br, + 2e → 2Br
+1.087
Fe|Fe2-
Fe?+ + 2e - Fe
-0.447
Pt|Hg²*, Hg*
2H92+ + 2e → Hg*
+0.92
Zn|Zn2+
Zn2+ + 2e → Zn
-0.762
Hg|Hg2+
Hg2+ + 2e - Hg
+0.851
Pt|H,O|H,, OH
2H,0 + 2e → H, + 20H
-0.828
Ag|Ag*
Ag* + e → Ag
+0.800
Mn|Mn²-
Mn2+ + 2e- → Mn
-1.180
Pt|Fe3+, Fe2+
Fe3+ + e → Fe2+
+0.771
A1|A13-
A13+ + 3e - Al
-1.662
Pt|I,, I-
I, + 2e-→ 21
Mg|Mg2-
Mg2+ + 2e → Mg
-2.372
+0.536
Pt|O2. OH-
+0.401
Na|Na*
O,(g) + 2H,0 + 4e¯ → 40H-
Na* + e → Na
-2.714
Pt|Fe(CN);, Fe(CN);
Fe(CN) + e → Fe(CN)
+0.36
Ca|Ca2+
Ca2+ + 2e → Ca
-2.868
Cu|Cu²*
Cu2+ + 2e- → Cu
+0.342
Sr|Sr*
Sr2+ + 2e- - Sr
-2.899
Pt|Hg|Hg,Cl,|CF
Hg,Cl, + 2e → 2Hg + 2C1-
+0.268
Ba|Ba2+
Ba?+ + 2e → Ba
-2.905
Ag|AgC1|Cl-
AgCl + e - Ag + CF
+0.222
K|K*
K* + e → K
-2.931
Pt|Snt+, Sn2+
Sn4+ + 2e → Sn2+
+0.151
Li|Li*
Li* + e → Li
-3.05
a Data mostly from CRC Handbook of Chemistry and Physics, 94th ed., Taylor-Francis/CRC
Press, Boca Raton, FL, 2013.

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