350 Journal of Chemical and Englneerlng Data, Vol. 36, No. 3, 1991
Correction
Vapor Pressure of 1,eDimethylbenzene, 1,4-Di(methyCd3)benzene, and 1,6Dimethylbenzene-d,, at 20-50 O C . Norman 0. Smith, J. Chem. Eng. Data 1990, 35,387-389. Because of an incorrectly applied correction for a determinate error, ail the pressures in Table Ishould be increased by 0.10 Torr. This requires a revision of Tables 11-IV as follows:
Table 11. Parameters for In pTorr= A 211.367)
B 3345.74 3318.96 3311.54
A 16.09726 16.05214 16.03107
do dl0
+
- B / ( t ("C)
Table 111. Smoothed Values of Vapor Pressure (Torr) at Rounded Temperatures do,
t,
present work 6.57 8.83 11.72 15.39 20.00 25.72 32.76
O C
20 25 30 35 40 45 50
d6
dl0
7.03 9.43 12.50 16.37 21.23 27.25 34.64
7.11 9.53 12.61 16.52 21.40 27.45 34.88
Table IV. Standard Enthalpies and Entropies of Vawrization at 2S OC ~~
do
kJ/mol Asom, J/(K mol) AHOM,
d0
dl0
42.66 i 0.10 42.32 f 0.06 42.22 0.07 105.4 f 0.2 105.2 f 0.2 106.0 0.3
At all but the hlghest temperature, the agreement of the vapor pressures with those of ref 2 is now better than that between refs 1 and 2. Agreement of the data in Table I V wtth those of the National Bureau of Standards ( 7 7 ) is much improved. The Bigeieisen expressions now become
+ (2.4 (f0.2))/T = -(9272 (*26))/T2 + (8.4 (f0.2))/T
In [ p ( d o ) / p ( d e ) = ] -(e618 (f18))/T2 In [p(d,)/p(d,,)]
and the remainder of the discussion is unchanged.
