Alberty R A
Department of Chemistry, Massachusetts Institute of Technology, Cambridge 02139.
Biochim Biophys Acta. 1994 Jul 20;1207(1):1-11. doi: 10.1016/0167-4838(94)90045-0.
Biochemists need two types of reaction equations, chemical equations in terms of species and biochemical equations in terms of reactants at specified pH and concentrations of free metal ions that are bound by reactant species. Both types of reaction equations have corresponding equilibrium constants, K for chemical reactions and K' for biochemical reactions. When the pH is specified you enter a whole new world of thermodynamics. There are new thermodynamic properties, new names (transformed thermodynamic properties), and new values, which are quite different, especially for the standard transformed Gibbs energy. This raises nomenclature problems because it is important to be able to distinguish between chemical equations and biochemical equations at a glance. It is also important to distinguish between the standard thermodynamic properties calculated from K and its temperature coefficient and the standard transformed thermodynamic properties calculated from K' and its temperature coefficient.
生物化学家需要两种类型的反应方程式，即基于物种的化学方程式和基于特定pH值以及反应物物种所结合的游离金属离子浓度下反应物的生化方程式。这两种类型的反应方程式都有相应的平衡常数，化学反应的K和生化反应的K'。当指定了pH值时，就进入了一个全新的热力学世界。这里有新的热力学性质、新的名称（转换后的热力学性质）和新的值，它们有很大不同，尤其是对于标准转换吉布斯自由能。这就引发了命名问题，因为能够一眼区分化学方程式和生化方程式很重要。区分从K及其温度系数计算出的标准热力学性质和从K'及其温度系数计算出的标准转换热力学性质也很重要。
