The Density of Liquid T₂O¹

Isotope effects on VLE properties of fluids and corresponding states: Critical point shifts on isotopic substitution

“…4a shows VdW1 vapor pressure IE's for HD and D 2 (using observed T C IE, P C IE and α/α from Tables 1(a) and 4, lines 2, 5 and 20, or correlated critical property IE's Tables 1(a) and 4, lines 2, 6, 10 and 20). These fits are in excellent agreement with observation [41,74], using a best fit α/α (Table 4, line 20). The cross-hatched line refers to H 2 /D 2 choosing α/α = 0.…”

“…Departures from the law of geometric mean are small and the liquid molar density IE for H 2 O/HOD is available to good precision [58,59]. There are a few low temperature liquid molar density IE data points for H 2 O/T 2 O [74]. At low temperature, ln(ρ /ρ) for H 2 O/D 2 O (and presumably for the other water isotopomer pairs) shows a minimum.…”

Effects of isotopic composition, temperature, pressure, and dissolved gases on the density of liquid water

“…The density of an aqueous solution is given by the quotient p = M/V, (58) (cf. eq (30) for pure water), where V is given by eq (56) and M is the mean molecular weight (59) However, even without knowing the concentration of dissolved gas, we see that dissolution of the gas will increase/ decrease the density as MdVi is greater/less than Mw/V w.…”

“…Based on Goldblatt's values [59] adjusted to pure T20, the molar volume at atmospheric pressure is VT2o/cm3 mol-1 = 18.16150 -4.39208X10-3t (43) + 21.334153 X 10-9 t 4 -83.406 814X 10-12 t 5 , Two runs differed by 0.006 cm 3 mol-I, so the error of eq (43) is estimated as 0.01 cm 3 mol-I. 3.5 < t/oC < 72.…”

Isotopic effects on non-linearity, molecular radius and intermolecular free length

“…For substances which are associated through hydrogen bonds there are additional reasons for the change in the intermolecular distance when the hydrogen atoms forming these bonds are replaced by deuterium. It has been shown [9,10] that this substitution produces an appreciable change in length of hydrogen bond, i.e. O---O distance.…”