MgCl2 s H2O l MgO s 2HCl g Delta S J KmolSolutiondSMgO

MgCl2 (s) + H2O (l) ---> MgO (s) + 2HCl (g)

Delta S = _____ J / (K)(mol)

dS(MgO) = 26.9 J/mol-K

dS(H2O) = 69.9 j/mol-K

dS(HCl) = 186.9 J/mol-K

dS(MgCl2) =89.62J/mol*K

dS(reaction) = 2*186.9 + 26.9 - 69.9 - 89.62 = 241.18 J/ K mol