Nitric Oxide Reacts with Chlorine to Form NOCl

Multiple Choice

Nitric oxide reacts with chlorine to form NOCl. The data refer to 298 K. 2NO(g) + Cl₂(g) → 2NOCl(g)
Substance: NO(g) Cl₂(g) NOCl(g)
ΔH°_f (kJ/mol) : 90.29 0 51.71
ΔG°_f (kJ/mol) : 86.60 0 66.07
S°(J/K·mol) : 210.65 223.0 261.6
What is the value of ΔG° for this reaction at 550 K?

A) -143.76 kJ
B) -78.78 kJ
C) -22.24 kJ
D) -10.56 kJ
E) 66600 kJ