Use the Following Data to Calculate the Standard Reaction Entropy

Multiple Choice

Use the following data to calculate the standard reaction entropy at 298 K for the thermal decomposition of ammonium chloride, NH₄Cl
NH₄Cl(s)  NH₃(g) + HCl(g)
S_m^o / J mol^-1
NH₄Cl(s) 94.85
NH₃(g) 192.77
HCl(g) 186.90

A) +474.52 J K^-1 mol^-1
B) 284.82 J K^-1 mol^-1
C) -100.72 J K^-1 mol^-1
D) +88.98 J K^-1 mol^-1