Figure
A3 Relation schema betweenT ’/Tc andZ c12
T’ is a constant for a given substance, which
approximates to 0.8Tc .T’ can be achieved from Figure A3 . The
following equation shows the relationship betweenT ’/T c andZ c 9,12:
\(\mathrm{T}^{\mathrm{{}^{\prime}}}\mathrm{/}\mathrm{T}_{\mathrm{c}}\mathrm{=}\mathrm{0.9869-0.6751}\mathrm{Z}_{\mathrm{c}}\)(A39)