182 



PHENOMENA, ATOMS, AND MOLECULES 



by Equations 42, 54 and the relation B = 0.23/ VTa- These results are 

 given in the fourth column of Table XL The values of K given in the 

 fifth column were obtained from F and Wj) by (43). 



The results shown in Table XII were obtained by exactly similar 

 methods from the data of the experiments at a pressure of 4.4 mm. 



FINAL RESULTS FOR THE DISSOCIATION CONSTANT K, AND 

 THE HEAT OF FORMATION q2 



From the experiments at low pressures we have been able to calculate 

 the numerical value of C and E and obtain preliminary estimates of 

 B and q. From the experiments at each of the pressures up to 4.4 mm. 

 we have calculated the dissociation constant K at temperatures from 1800 

 to 2900° and have collected the results in Tables IX, XI and XII. 



We are now in a position to test out the correctness of the theory which 

 has been developed in this paper. The conditions which should be fulfilled 

 by the values of K are 



