Thermodynamics Quantities for Selected Substances at 298.15 K (25⁰C)Substance∆H⁰f (kJ/mol)∆G⁰f (kJ/mol)S (J/K-mol)Carbon C2H2(g)226.7209.2200.8C2H4(g)52.3068.11219.4 Hydrogen H2(g)00130.58 Oxygen O2(g)00205.0H2O(l)-285.83-237.1369.913. What is the value of ∆S⁰ for the catalytic hydrogenation of ethene to ethane: C2H4(g) + H2(g) → C2H6(g) + 2H2O(l) in J/K?

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Chemistry: The Molecular Science

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ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter16: Thermodynamics: Directionality Of Chemical Reactions

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Thermodynamics Quantities for Selected Substances at 298.15 K (25⁰C)
Substance	∆H⁰f (kJ/mol)	∆G⁰f (kJ/mol)	S (J/K-mol)
Carbon
C₂H_2(g)	226.7	209.2	200.8
C₂H_4(g)	52.30	68.11	219.4

Hydrogen
H_2(g)	0	0	130.58

Oxygen
O_2(g)	0	0	205.0
H₂O_(l)	-285.83	-237.13	69.91

3. What is the value of ∆S⁰ for the catalytic hydrogenation of ethene to ethane: C₂H_4(g)+ H_2(g) → C₂H_6(g)+ 2H₂O_(l) in J/K?

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