1. State the second law of thermodynamics and give an example of how it is applied to a spontaeous process.

2. For the reaction: CO + 3 H₂ = CH₄ + H₂O

a) Calculate the enthalpy of reaction and the entropy of reaction from a thermochemcial table.

b) Calculated the free energy change of the reaction from both the values of enthapy and entropy and from the table of free energies of formation.

c) Relate the thermochemical quantities to the second law by calculating the a) entropy change of the chemicals b) the entropy change of the surroundings caused by the chemical reaction c) the total entropy change caused by the chemical reaction taking place at constant temperature and pressure.

 3. Calculate the free energy change of reaction:

AgCl(s) = Ag⁺(aq) + Cl^-(aq)

from

a) the free energies of formation in the following thermochemical table:

b) from the cell potentials

c) from Ksp