( 646 ) 
So in this case (compare fig. 32) we are far bevond the coincidence 
KD. But by interpolation between 60° and 70° we find for 7’= 63: 
aha = 2146 1957 @1651° 1936 AOT 859 “abe 
315 p= 2205 . 1890-1575 1260 945% 630 315 
p= 59 87 26 ED 0 ae 
E‚D C 
so that the said coincidence takes place at 7 = 63 (p‚) = — 76). 
So we see that the whole coexistence-curve solid-liquid falls in 
the region of negative pressures, from 7’ = 54, p= — 327 to 77= 63, 
p=—76. Accordingly the coexistence-curve vapour-liquid OK is 
not intersected by that for solid-liquid, and there exists no solid state. 
If for Ab =O0,5 the line QCr extended from 62° to 80°, i.e. over 
a region of 18°, now it has contracted for 44 = 0,4 to a region of 
only 9°, viz. from 54° to 63°. 
28. Let us now calculate the case (see fig. 25) 
Ab=0,8 (6, = 1,726, = 178) 
The whole curve lies between 40° and 50°, and so we determine 
the values of p for these two temperatures. The value of 4 is now 
AO oe torther, Li lok ep .== ou, 
For 7’= 40 we have 9 =‘/,, and therefore: 
log’? — — 1,706 — 0,4343 p—log™ p | 
ieee 
1—, | 
1 2700\ — 
v—= 140,3 (3 + a |i p = 266,707 ——_\ 
p a 
From this we find: 
MA 
| SPEER toy } =n 
p | log a B Vv a / u? | Pp 
| | | 
6 {618 | "0.443, |. 4400 9931 | —63I 
Bo: - AGS vr 0253 IP 4 Aat 088 | TE) 
| | 
4 —0.663 | 0.435 | 1.238 1761 — 694 
3 —0.074 0.677 | 1.374 | 41436 —636 
2 0.556 | 0.880 | 1.546 1130 | —597 
| | | 
1 4.972 | 0.974 | 1.884 761 — 404 
25 
For 7’=50 we have dt and further : 
8 2700 
log*® Ter 1,887 — 0,4343 pp — log’ p ; p= 3333 gy — ——: 
jl ‘ v 
from which the following table can be drawn up. 
