Comment on vapor phase homogeneous nucleation of CH 3 CN and the scaling law for onset supersaturation ratios

Citation data:

Chemical Physics Letters, ISSN: 0009-2614, Vol: 189, Issue: 1, Page: 100-102

Publication Year:
1992
Citations 10
Citation Indexes 10
Repository URL:
http://scholarsmine.mst.edu/phys_facwork/625
DOI:
10.1016/0009-2614(92)85160-c
Author(s):
Hale, Barbara N.; Kelly, Brendan
Publisher(s):
Elsevier BV; Elsevier
Tags:
Physics and Astronomy; Chemistry; Physics
article description
We point out that the scaling law for onset vapor phase nucleation, ln S onset ≈ 0.53 [Ω( T c / T −1)] 32, with Ω = 1.77 (from CH 3 CN surface tension data) predicts the temperature dependence and approximate magnitude of CH 3 CN supersaturation ratio data, S. This is contrary to the conclusions of Wright, Caldwell and El-Shall who estimate too large a value (2.14) for Ω. We note that Ω, the excess molecular surface entropy/ k, is more reliably extracted from the temperature derivative of the surface tension data.