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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 31, Number 5
JKCSEZ 31(5)
October 20, 1987 

 
Title
Spectrophotometric Determination of Acidic Strength of Some Acids in Acetic Acid Medium

분광광도법에 의한 아세트산에서의 몇가지 산의 세기 측정에 관한 연구
Author
Ki-Won Cha, Sung-Wook Hong, Chang-Suk Yang, Ikchoon Lee

차기원, 홍성욱, 양창숙, 이익춘
Keywords
Abstract
benzenesulfonic acid (HBs)와 그 유도체인 p-chlorobenzenesulfonic acid(HCs)의 세기를 아세트산 용매에서 분광광도법으로 측정하였다. Indicator Base인 HTs, HBs, HCs 및 HNs의 이온화상수는 각각 3.5 × 102, 4.1 × 102, 19.3 × 102 , 50 × 102 이었다.

Acidic strength of benzenesulfonic acid (HBs) and it's derivatives, p-toluenesulfonic acid(HTs), p-chlorobenzenesulfonic acid(HCs) and m-nitrobenzenesulfonic acid(HNs), were measured in the anhydrous acetic acid medium by spectrophotometry. p-naphtholbenzein (PNB) was used as an indicator base and the ionization constants of HTs, HBs, HCs and HNs were 3.5 × 102, 4.1 × 102, 19.3 × 102 and 50 × 102, respectively, at 20.0±0.1℃.

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452 - 456
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