(a) Define the standard heat of reaction, the standard heat of formation, and the standard heat of combustion. (3 Marks) (b) State the second law of thermodynamics. (1 Mark) (c) Describes 4 characteristics of heat engine. (4 Marks) (d) Write down the general thermodynamic equation for enthalpy, Helmholtz energy, and Gibbs energy. (3 Marks) (e) State the Henry's law. (1 Mark) (f) State the Gibbs' theorem in the ideal gas mixture model. (4 Marks) (g) Based on the Le Chatelier's principle, write down the effect of change in concentration and the effect of change in temperature.