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math, physics, and chemistry
>
Onsager Conductance End ceremony
昂萨格电导极限式
;onsager limiting conductivity equation
1929年onsager(美籍挪威人)利用德拜-休克尔理论中的离子氛概念推导得到的电导-浓度关系式。即:a=ao-a。式中a为电解质溶液的当量电导,ao为其极限(即无限稀释时的)当量电导,a为常数,c为当量浓度。上式的浓度适用范围虽很低,为c≤0.005mol/l,但其线性关系及斜率 a值与实验相符。这从另一方面证明了在稀溶液范围内,静电力是决定电解溶液性质的主导因素。