V2EX solubility product

Solubility Product

释义 Definition

溶度积(常写作 Ksp):在一定温度下,难溶电解质达到溶解平衡时,其离子浓度(更严格说是活度)按化学计量数幂次相乘得到的平衡常数。溶度积越大,通常表示该盐在水中越容易溶解(但也受离子价态与条件影响)。该词组在分析化学、无机化学与溶液平衡中非常常见。

发音 Pronunciation (IPA)

/sljblti prdkt/ (UK)
/sljblti prdkt/ (US)

例句 Examples

The solubility product of AgCl helps predict when a precipitate will form.
AgCl 的溶度积有助于预测何时会生成沉淀。

Because the ionic product exceeded the solubility product, calcium carbonate precipitated out of the solution.
由于离子积超过了溶度积,碳酸钙从溶液中析出形成沉淀。

词源 Etymology

solubility 来自拉丁语 solūbilis(“可溶解的”),与 solvere(“松开、溶解”)相关;product 源于拉丁语 productum(“产物、结果”)。在化学语境里,product 指“(浓度/活度的)乘积”,因此 solubility product 就是“与溶解平衡相关的乘积常数”。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Atkins’ Physical Chemistry(《阿特金斯物理化学》)在溶液平衡与电解质章节讨论 Ksp 与沉淀条件。
  • Quantitative Chemical Analysis(如 Harris 等分析化学教材)用于计算沉淀滴定、选择性沉淀与分离。
  • Vogel’s Textbook of Quantitative Chemical Analysis(《沃格尔定量分析化学》)常以溶度积解释经典定量分析实验现象。
  • *IUPAC Compendium of Chemical Terminology (Gold Book)*(IUPAC《化学术语汇编》)收录并规范相关术语与定义。
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