From the following equations and heats of reaction, calculate the standard molar heat of formation of AgCl at : (a) Ag20 (s) + 2HCI (g) = 2 AgCI (s) + H2O (I) H = -77,610 cal

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Question 7 of 10
From the following equations and heats of reaction, calculate the standard molar heat of formation of AgCl at 25C.
(a) Ag20 (s) + 2HCI (g) = 2 A9CI (s) + H20 (I) H = -77,610 cal
(b) 2 Ag (s) + 1/2 02 (g) = Ag20 (s) H = -7310 cal
(c) 1/2 H2 (g) + 1/2 C12 (g) = HCI (g) H = -22,060 cal
(d) H2 (g) + 1/2 02 (g) = H20 (I) H = -68,320 cal
Select the correct response:
-22,800 cal
-17,890 cal
-30,360 cal
-28,350 cal
Transcribed Image Text:Question 7 of 10 From the following equations and heats of reaction, calculate the standard molar heat of formation of AgCl at 25C. (a) Ag20 (s) + 2HCI (g) = 2 A9CI (s) + H20 (I) H = -77,610 cal (b) 2 Ag (s) + 1/2 02 (g) = Ag20 (s) H = -7310 cal (c) 1/2 H2 (g) + 1/2 C12 (g) = HCI (g) H = -22,060 cal (d) H2 (g) + 1/2 02 (g) = H20 (I) H = -68,320 cal Select the correct response: -22,800 cal -17,890 cal -30,360 cal -28,350 cal
Table 6.3 Standard Enthalpies of Formation of Some
Inorganic Substances at 25°C
Substance
AH; (kJ/mol)
Substance
AH? (kJ/mol)
- 187.6
Ag(s)
AgCl(s)
H,O2(/)
- 127.04
Hg(/)
Al(s)
2(s)
Al,03(s)
- 1669.8
HI(g)
25.94
Br2()
Mg(s)
HBr(g)
C(graphite)
-36.2
MgO(s)
-601.8
M9CO (s)
N2(g)
NH3(g)
NO(g)
NO2(g)
N204(g)
-1112.9
C(diamond)
1.90
CO(g)
Co,(G)
Ca(s)
-110.5
-46.3
-393.5
90.4
33.85
CaO(s)
-635.6
9.66
CaCO3(s)
-1206.9
N20(g)
81.56
O(g)
249.4
HCIG)
O2(g)
O3(g)
-92.3
Cu(s)
142.2
CuO(s)
-155.2
S(rhombic)
S(monoclinic)
SO-(g)
SO;(g)
F2(g)
0.30
HF(g)
H(g)
-268.61
-296.1
218.2
-395.2
H2(g)
H,S(g)
-20.15
H2O(g)
-241.8
ZnO(s)
-347.98
H20(1)
-285.8
Transcribed Image Text:Table 6.3 Standard Enthalpies of Formation of Some Inorganic Substances at 25°C Substance AH; (kJ/mol) Substance AH? (kJ/mol) - 187.6 Ag(s) AgCl(s) H,O2(/) - 127.04 Hg(/) Al(s) 2(s) Al,03(s) - 1669.8 HI(g) 25.94 Br2() Mg(s) HBr(g) C(graphite) -36.2 MgO(s) -601.8 M9CO (s) N2(g) NH3(g) NO(g) NO2(g) N204(g) -1112.9 C(diamond) 1.90 CO(g) Co,(G) Ca(s) -110.5 -46.3 -393.5 90.4 33.85 CaO(s) -635.6 9.66 CaCO3(s) -1206.9 N20(g) 81.56 O(g) 249.4 HCIG) O2(g) O3(g) -92.3 Cu(s) 142.2 CuO(s) -155.2 S(rhombic) S(monoclinic) SO-(g) SO;(g) F2(g) 0.30 HF(g) H(g) -268.61 -296.1 218.2 -395.2 H2(g) H,S(g) -20.15 H2O(g) -241.8 ZnO(s) -347.98 H20(1) -285.8
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