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Studying Temp Dependence & Thermodynamics (4)

Studying Temp Dependence & Thermodynamics (4) - 164...

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Unformatted text preview: 164 Principles of Clwmishy Ll Table 1 Thermodynamic properties M— (86°): 5°, AH°, Substance kI/mol ]/K - moi kllmol Zn(s) 0 41.63 0 Pb(s) 0 64.81 0 Zn2+(aq) —147.06 412.1 —153.89 Pb2+(aq) —24.43 10.5 —1.7 —————-___‘_‘—____ (3) Calculate AG° for the chemical reaction occurrin the calculated AG" by calculating the percent di Aer- 9b” paw .- —1u.q3 - (—147.09) fillies 1/ {WJ‘)‘°OJI?QZ / l 2 D. c, c (b) Calculate AS° and the percentadifference. Is this a favorable entropy change? 45" = “9:5 “Her-Tibia) i22.\e- o x ”L” 7 ——--"'"'* (up; (on/ ( I134; J) k..—/-—l (cl Calculate AH” and the percent difference. Is thisaJaa-orabie energy change? AH”: ~l.'+- (453“) fits—2.451 (swam- W lfl/Q g in the cell. Compare your experimental AG" to fference. Is this chemical reaction spontaneous? i it 2 5" 2’. ‘8 c: S .3. o. m X E; '6' o E It =4 ‘5 e 'u 5' n 8. D) E 2 (D o _. (I) E." :1 2: E E 5. o b) E if "I 3 containing 0.01M Pb“. 3m mar/LID! Off-MC} Pb“ Mfg OJx'AéC b flan/rm 5. A battery consists of two or more electrochemical cells connected together. For example, a 12-V car battery has several 2-V cells connected in parallel (+ terminal to + terminal and » terminal to — terminal) and six of these ”sub-batteries” are connected in series (+ terminal of the first to the — terminal of the second). Look up the description of a car battery in your textbook and explain the purpose of each of these types of connections. (D 3&1 (1“ 0m ad a, maWwij [lwqflilfl H4 ZLll’J‘tOOU id zrf‘r/(L! (-4: “Fr (ILL) Mal-d) ill-L (it! fl/Ct] 0’.) a ’OH'F’JW’ I; Embi'é éwlgfi]; Mali/bfé’é’sj on m Wow” 0} m an mm A» mama Md w “is“ ® 9% £1 Wut"'rf Ji’novualv 2051f filial/Wild (Ll/ital 9“ fl?" fllficl (NS mace Woolf , MW Mal/:1 05er at“? Neil/‘15 ”’4" v 0 W212; W‘“ ' = ...
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