Table 2: Standard Gibbs free energy change when using hydrogen-producing acetogens for metabolism of organic acids and alcohols.

Reaction equation (pH = 7, = 298.15 K) (kJ/mol)

CH3CH2OH + H2O CH3COO + 2H2 + 2H++9.6 > 0<0
CH3CH2COO + 3H2O CH3COO + + H+ + 3H2+76.1 > 0<0
CH3CH2COO + 2 CH3COO + H+ + 3HCOO+72.4 > 0<0
CH3CH2CH2COO + 2H2O 2CH3COO + H + 2H2+48.1 > 0<0
CH3CH2CH2COO + 2CH3COO + H+ + 2HCOO+45.5 > 0<0
CH3CH2CH2CH2COO + 2H2O CH3COO + CH3CH2COO + H+ + 2H2+25.1 > 0<0
CH3CHOHCOO + 2H2O CH3COO + + H+ + 2H2−4.2 < 0>0