参考习题答案-6 6.1 解:(1)Pb→Pb2++2e (2)2Ag++2e→2Ag (3)G°=-zFE0=-2×96480×0.49=-94550.4J) AS=-FE=-35.50K) aT 6.4 解:(1)W=7△Q=7△H=-726.51×20%=-145.3(KJ) (2)W,m=△G°=-702.36(KJ) (3)W=AG=AG°+RTIn a,p=-702.3+831x298×10n(21e 1 =-696.56 6.8 解:(1)对于2Ni+O2→2Ni0 △G=AG8oK+RTIn 60 .AG(o0OK =RTIn Po 2(-244550+98.5×1000)=8.31×1000×lnPo, Po,=5.52×10-16atm (2)Ni-2e→Wi2+ 20,+2e→0- (3)AG=AG+RTIn-1 E=-AC-24450+98500=0.757(V) F 2×96480
参考习题答案-6 6.1 解:(1) Pb Pb 2e 2 (2) 2Ag 2e 2Ag (3) 2 96480 0.49 94550.4 0 0 G zFE (J) 35.5 T E S zF (J/K) 6.4 解:(1)W Q H 726.51 20% 145.3(KJ) (2) 702.36 0 Wrev G (KJ) (3) 696.56 702.3 8.31 298 10 ln .21 1 ln 3 3 / 2 3 / 2 2 0 O W G G RT 6.8 解:(1)对于 2Ni O2 2NiO 2 ln 0 1 ln 0 1000 2 0 1000 K O K G RT P O G G RT 2 2 244550 98.5 1000 8.31 1000 ln PO PO atm 16 5.52 10 2 (2) 2 Ni 2e Ni 2 2 2 2 1 O e O (3) 1/ 2 0 21 ln PO G G RT 0.757 2 96480 244550 98500 zF G E (V)
△G=-244550+98500+RTln (4) 0, 1 =-244550+98500+8.31×10001 10-5 △G E= =0.2608(V) -2×96480 6.10 解,1①E°-AG-92000-1T)x42-353(v) -2F 1×96480 (2)W=3.6×106(J) △G=(-92000+11×1000)×4.2=-3.39×105(J) W =10.62(mol) m=10.62×7=74.34(g) (3)dE=-4.77x10-4 dT -96480×3.53+1000×4.77×10+)=-3.866×105 Q=n(△H-△G)= 339×10×686-3.39)x10=-1463) 1000 (4)E=E0-RT1 F Inauc=3.53+8.4x000ln0.2=3.669(v) 96480 (5)△G=△G°+RT1naa-(←92000+11T)×4.2-8.314×Tln0.2 dE_1×42-8.3141n02_-3.402×10- d -96480 E=AG=3.665(V) -2F △H=-96480×(3.665+0.3402)=-3.864×105 △HT= 1000 ×3.864×105=1092.8(J/s) 3.536×105
(4) 5 1/ 2 2 10 1 244550 98500 8.31 1000 ln 1 244550 98500 ln O G RT 0.2608 2 96480 G E (V) 6.10 解:(1) 3.53 1 96480 92000 11 4.2 0 0 T zF G E (V) (2) 6 W 3.610 (J) 5 G 92000 111000 4.2 3.3910 (J) 10.62 G W n (mol) m 10.62 7 74.34 (g) (3) 4 4.77 10 dT dE 4 5 96480 3.53 1000 4.77 10 3.866 10 dT dE H zF E T 3.886 3.39 10 146.3 3.39 10 1000 5 5 Q n H G (J) (4) ln 0.2 3.669 96480 8.314 1000 ln 3.53 0 aLiCl zF RT E E (V) (5) ln 92000 11 4.2 8.314 ln 0.2 0 G G RT aLiCl T T 4 3.402 10 96480 11 4.2 8.314ln 0.2 dT dE 3.665 zF G E (V) 5 H 96480 3.665 0.3402 3.864 10 3.864 10 1092.8 3.536 10 1000 5 5 HT (J/s)