Bemerkungen zur Berechnung des Molek�lradius aus Molvolumen und Schallgeschwindigkeit

Abstract

2) ZS. f. Phys. 114, 110--115, 1939. --2) Die benutzten Zeichen haben folgende Bedeutung: us :-adiabatische, ~t T ~ isotherme Sehallgesehwindigkeit ; c~ = spez. W~rme bei kons~antem Druck, c v bei konstantem Volumen; ~ ~ Ausdehnungskoeffizient, fiT= isotherme Kompressibilit~t, g = VerhMtnis der spez. W/~rmen, e = Diehte, T = abs. Temperatur, NL = Losehmidtsche Zah], R ~ Gaskonstante, r = Molektilradius, a, b GrSBen der Zustandsgleiehung, V ~-Molvolumen, p = Druck.

Excess volumes, densities, speeds of sound and viscosities of binary systems of diisopropyl ether and acetates at 303.15K

“…Sound speeds were evaluated on the basis of Jacobson's free length theory [31,32] and Schaaff's collision factor theory [33][34][35]. The details of the theories were discussed in our earlier paper [36].…”

Acoustic Studies on Different Binary Liquid Mixtures of LIX Reagents with Different Diluents

“…The theoretical values of ultrasonic velocity in the present binary mixtures were calculated using Schaaff's collision factor theory (CFT), Nomoto's relation (NOM), and Van Dael and Vangeel ideal mixing relation (IMR) by the following expressions: (2) where N is the Avogadro's number and r is the molecular radius.…”

Non-linearity parameter B/A of binary liquid mixtures at elevated pressures

“…(2) the non-linearity parameter is calculated by two different methods, viz., Tong and Dong method and the thermodynamic method. Tong and Dong [5] applied Schaaff's [6] equation for sound velocity, namely;…”

“…A number of experimental and theoretical investigations have been carried out on the non-linearity parameter of liquids. Tong and Dong [5] determined for pure liquids making use of the Schaaff's [6] equation for sound velocity. Non-linearity parameter of binary as well as multicomponent liquid mixtures has also been computed by several workers [7][8][9][10].…”