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Given the following table of thermodynamic data, substance S° C2H2 (g) 200.8 J/mol −K C2H4 (g)...

Given the following table of thermodynamic data,

substance S°
C2H2 (g) 200.8 J/mol −K
C2H4 (g) 219.4
C2H6 (g) 229.5
H2 (g) 130.58


determine the D S° (in J/mol −K) for the reaction:

C2H2 (g) + H2 (g) ® C2H4 (g)

−111.98
−101.88
−232.46
+111.98
+101.88
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