Given that the bond dissociation enthalpies, C-H, Adiss' == 410 kJ; H H-H, Adiss H =243 kJ; С, Д. subH =716 kJ; what is the enthalpy change of the reaction: C (s) + 2H, (g) → CH4 (g) ? Select one: a. -681 kJ o b. -2842 kJ С. 792 kJ o d. -438 kJ

Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section: Chapter Questions
Problem 51PS: Enthalpy changes for the following reactions can be determined experimentally: N2(g) + 3 H2(g) 2...
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Given that the bond dissociation enthalpies,
С-Н, Д.
H ==410 kJ;
diss
Adis
C, AgubH = 716 kJ;
Н-Н, Д
H =243 kJ;
sub
what is the enthalpy change of the reaction: C (s) + 2H, (g) → CH4 (g) ?
Select one:
а. -681 kJ
b. -2842 kJ
С. 792 kJ
d. -438 kJ
Considering the energy cycle,
K* (g)
CI (g)
ДН3 715
AH = -320
AH = -378
KC(s)
K* (aq)
CI (aq)
+
ΔΗ-
-1
what is the enthalpy of solution of KCl? Note that all energy values are in kJ mol
Select one:
а. -1413 kJ
o b. 1413 kJ
С. 773 kJ
d. 17 kJ
Transcribed Image Text:Given that the bond dissociation enthalpies, С-Н, Д. H ==410 kJ; diss Adis C, AgubH = 716 kJ; Н-Н, Д H =243 kJ; sub what is the enthalpy change of the reaction: C (s) + 2H, (g) → CH4 (g) ? Select one: а. -681 kJ b. -2842 kJ С. 792 kJ d. -438 kJ Considering the energy cycle, K* (g) CI (g) ДН3 715 AH = -320 AH = -378 KC(s) K* (aq) CI (aq) + ΔΗ- -1 what is the enthalpy of solution of KCl? Note that all energy values are in kJ mol Select one: а. -1413 kJ o b. 1413 kJ С. 773 kJ d. 17 kJ
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