Use the Table of Thermodynamic Data to decide which of thefollowing reactions have K>1 at 298 K:
HCl(g)+NH3(g) <=> NH4Cl(s)
2 Al2O3(s) + 3 Si(s)<=>  3 SiO2(s) + 4 Al(s)
Fe(s) + H2S(g) <=> FeS(s) + H2(g).
Which of the products of these reactions are favored by a risein temperature?
