Speeds of sound and isentropic functions of triethylene glycol monoethyl ether-n-alcohol mixtures at 298.15 K
| Main Authors: | Amalendu Pal, Gurcharan Dass |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1999
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5852485 |
Daftar Isi:
- Department of Chemistry, Kurukshetra University, Kurukshetra-136 119, India Manuscript received 3 May 1999, accepted 27 May 1999 The speed of sound measurements have been made using a NUSONIC velocimeter based on the sing-around technique, for binary liquid mixtures of triethylene glycol monoethyl ether with methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, and 1-hexanol at 298.15 K and atmospheric pressure, across the entire composition range. Their values have been combined with those of the excess molar volumes converted to densities to give estimates of the isentropic molar quantity, Ks, equal to —(ẟv/ẟp)s, and of its excess counterpart, \(k_S^E\). The magnitude of \(k_S^E\) decreases with increasing chain-length of the n-alcohol. The excess isentropic comperssihilities have been compared with our previous published data with an effort to assess the effects of replacing methyl by ethyl groups and of inserting oxyethylene groups. Also, the deviations of the speeds of sound Au have been calculated for all measured salues of x1. The behaviour of u, Δu, and \(k_S^E\) with composition and the number of carbon atoms in the alcohol molecule is discussed.