130 PROPERTIES OF ELECTRICALLY CONDUCTING SYSTEMS 



its value as a result of pressure change. The third term of the right- 

 hand member of Equation 43 may therefore be neglected. The fourth 

 term, likewise, may be neglected at this concentration, since the con- 

 ductance of the pure solvent is negligible in comparison with that of the 

 solution. The observed conductance change of solutions, under these 

 conditions, therefore, is due to the first two terms. The value of the first 



Pressure. 

 1000 1500 2000 



1.02 

 1.0! 

 1.00 



0.99 



0.98 



0.97 



3,095 



^0.94 



0.93 



0.9? 

 091 

 090 

 0.89 



0.88 

 057 



500 



3500 



v\ 



\ 



\ 



5000 

 99-50* 



78.88 



59.20 



39.40 



19.18 



0.01 



FIG. 24. Showing the Influence of Pressure on the Resistance of 0.01 N Aqueous 

 KC1 Solutions at Different Temperatures. 



term of the right-hand member may be calculated from the data of 

 Amagat on the compressibility of pure water, since the compressibility 

 of an 0.01 N solution will not differ appreciably from that of pure water. 

 If the first term of the right-hand member is transposed, we have the 

 equation: 



<pAp 



_ 



vAp 9 



