234 



JONES AND SCHUMB. 



TABLE XVI. 



o°c. 



The free energy (A) of the reaction: Tl (soHd) + 1/2 I2 (sohd) = 

 Til (solid), is obtained from these potentials by multiplying by F 

 (96,500 coulombs) ; and the heat of formation may be calculated by 

 the Helmholtz equation. The results may be summarized as follows: 



