Measurement of vapor-phase compressibility factors of monocarboxylic acids using a flow-type apparatus and their association constants

Shinj̀i Miyamoto, Shinichi Nakamura, Yoshio Iwai, Yasuhiko Arai

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20 Citations (Scopus)

Abstract

The vapor-phase compressibility factors of several monocarboxylic acids (formic acid, acetic acid, propionic acid, n-butyric acid, isobutyric acid, and valeric acid) were measured by a flow-type apparatus at saturated vapor pressure from 30°C to 150°C. The vapor-phase association constants for monocarboxylic acids were evaluated from the compressibility factors obtained. They can be expressed in In K = -149/R + 58 500/RT for formic acid and In K = -136/R + 58 500/RT for other acids, where K is the association constant, T is the temperature in K, and R is the gas constant in J·mol-1·K-11.

Original languageEnglish
Pages (from-to)48-51
Number of pages4
JournalJournal of Chemical and Engineering Data
Volume44
Issue number1
DOIs
Publication statusPublished - Jan 1 1999

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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