Standard state Gibbs Energy of Formation at 298.15K and 1bar

• Definition

  Standard state Gibbs Energy of formation (at 298.15K and 1bar) is the change in Gibbs Energy when making 1 mole of compound from single element substances of each element consisting the molecule) at the standard temperature and pressure (298.15K and 1bar).

• Estimation Method

  - MolInstincts: The Property value is estimated by the thermodynamic relationship with other properties. The estimated value is finally determined after manual inspection.
  d(SGE)=d(SEF)-298.15K Χ d(SAE)
  SEF: Standard State Enthalpy of Formation at 298.15K and 1bar (a property that is provided in MolInstincts)
  SAE: Standard State Absolute Entropy at 298.15K and 1bar (a property that is provided in MolInstincts)

• Supplementary Explanation on Accuracy

  Comment	Meaning of Comment
  ≤ 1 kcal/mol	0 kcal/mol ≤ abs error ≤ 1 kcal/mol
  ≤ 3 kcal/mol	1 kcal/mol < abs error ≤ 3 kcal/mol
  ≤ 5 kcal/mol	3 kcal/mol < abs error ≤ 5 kcal/mol
  ≤ 7 kcal/mol	5 kcal/mol < abs error ≤ 7 kcal/mol
  > 7 kcal/mol	abs error > 7 kcal/mol
  Exp. Data Unavailable	Experimental Data are Unavailable

  Where absolute error means the absolute value of (experimental value)-(calculated value).