酸碱理论中无量纲参数的应用。II. 二价弱酸和弱碱的摩尔缓冲容量
On the use of dimensionless parameters in acid-base theory. II. The molar buffer capacities of bivalent weak acids and bases.
作者信息
Rilbe H
出版信息
Electrophoresis. 1993 Mar;14(3):202-4. doi: 10.1002/elps.1150140133.
PMID:8486131
Abstract
It is shown that stoichiometric rather than thermodynamic dissociation constants can and should be used in the buffer capacity theory. The mean valence of bivalent weak acids and bases is deduced in a form with dimensionless parameters. The expressions for the molar buffer capacities of bivalent weak acids and bases are identical with that for a bivalent ampholyte, and the theory for the latter given earlier is thus valid in all details for bivalent weak acids and bases.
摘要
结果表明，在缓冲容量理论中可以且应该使用化学计量解离常数而非热力学解离常数。二价弱酸和弱碱的平均化合价以无量纲参数的形式推导得出。二价弱酸和弱碱的摩尔缓冲容量表达式与二价两性电解质的相同，因此先前给出的关于二价两性电解质的理论在所有细节上对二价弱酸和弱碱均有效。
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