Question

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