1) DG0 = DH0-TDS0
at equilibrium,DG = 0
0 = 86.4-(x*79.1*10^-3)
x = T = 1092.3 k
above 1092.3 k ,DG0 will be -ve.(spontaneous)
2)
DG0 = DH0-TDS0
at equilibrium,DG = 0
0 = 98.8-(x*143*10^-3)
x = T = 690.91 k
above 690.91 k , DG0 will be -ve.(spontaneous)
For the reaction NH4Cl(aq) NHj(g) + HCl(aq) ??? = 86.4 kJ and ? S°-79.1 J/K AG°...
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