Gibbs free energy

• equation for Gibbs free energy 


  enthalpy change minus temperature times entropy of system

  
• if Gibbs free energy is negative the reaction is feasible
• equation for Gibbs free using the ideal gas constant 


  the equation:

  
• Gibbs free and equilibrium constant 


  if Gibbs free is negative then K is positive. this means products are favoured

  is Gibbs free is positive then K is negative. this means reactants are favoured