“pKa value”的概念、定义、翻译、参考文献-科学参考

单词	pKa value
释义	pKa value Chemical Engineering A measure of the strength of an acid expressed as the negative base-10 logarithm of the acid dissociation constant, K_a: $p K_{a} = {log}_{10} \frac{1}{[K_{a}]}$ The dissociation constant can be calculated from the dissociation reaction. For example, for the reaction $H B_{a q} \leftrightarrow H_{a q}^{+} + B_{a q}^{-} :$ : $K_{a} = \frac{[H^{+}] [B^{-}]}{[H B]}$ The pK value is often used to compare the strengths of different acids.
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