Solution: For the reaction NH4Cl (s) → NH3 (g) + HCl (g) ΔH ° = +176...

For the reaction

NH₄Cl (s) → NH₃ (g) + HCl (g)

ΔH ° = +176 kJ and ΔG ° = +91.2 kJ at 298 K. What is the value of ΔG at 1000 K?

a) -109 kJ

b) -64 kJ

c) +64 kJ

d) +109 kJ