749 
S’ = 6,95 R. 
Now the heat of fusion per gram molecule is 554,5 eal., so that 
r= 279 R, 
’ 
? 
de dte 
if 
and, according to (19), 
S'= 8,14 R. 
From (18) follows 
1 
ie (T log p) = 26,12 
and from (17) ') 
A22:33,92. 
Substituting these different values in (16) we find 
W.L 
$ 11. As to the degree of precision of this result it must be 
remarked in the first place that, according to (16) and (17), w is 
proportional to low powers of #7’ n and 4. Therefore, an uncer- 
tainty in the values of these quantities will not cause an error of 
many percentages in w. 
CRON GS od 
| En eÌ 
ple) = a 
z a, 
4) 
For mercury ¢ must be put equal to 97. Further 
Cp = Cy -\- fr. 
For the coefficient f NERNsT gives 21.105, but here a calory is taken as unit 
of heat. Choosing the erg instead and substituting gR for f, so that 
Cy = C+ Rg To 
we have 
gs 100 209 
From (20) we now find 
S" ==> RI x(0) + x49] +5 Rol 
if we put 
Ei 4 
1 (#) = — log (.1 saith 
Pcl 
1) Calculated with: R = 83,2.10°; N = 67.102; M= 200; = 6,42.10—-27, 
