What is the ΔS° of this reaction?

Question

NH₄Cl(s) → NH₃(g) + HCl(g) ΔH°=176 kJ/mol

At 25 °C, this reaction has a ΔG° of 91.1 kJ/mol.

What is the ΔS° of this reaction?

Answer 1

ΔG = ΔH - TΔS

91.1 = 176 - (298)ΔS

solve for ΔS and note it will be in kJ/K. You will want to change it to J/K by multiplying by 1000.