336 Mr. W. C. D. Whetham. Electric Conductivity of [Feb. 14, 



Potassium Bichromate. JK 2 Cr 2 07 = 147*3. 

 In Cell No. 1, the water used had a resistance of 7*26 x 10 5 ohms. 





m. 





1 



R. 



k/m = fx. 









■002278 







■132 



3004 



710 



0-865 







■006047 







•182 



1138 



706 



0-860 



0' 



01475 



0' 



•245 



472-2 



698 



0-850 



0' 



04019 



o- 



•343 



5240* 



678 



0-826 



o- 



1010 



o- 



466 



2202* 



642 



0-782 



0' 



•2577 



0- 



636 



917-1* 



604 



0-736 



Magnesium Sulphate. iMgS0 4 .7H 2 = 123-26. 

 In Cell No. 1, the water used had a resistance of 9-75 x 10 5 ohms. 





m. 







R. 



Jcjm = ft. 



/*//*»■ 



0' 



00000644 



0' 



0186 



511000 



702 



0-987 



0' 



00001398 







•0241 



330000 



697 



0-980 







00003218 







'0318 



179200 



687 



0-965 



0' 



00007707 







0426 



84710 



680 



0-955 



0' 



0003438 



0' 



0701 



21230 



652 



0-916 







001423 



0' 



113 



5554 



598 



0-840 







■005030 







•171 



1881 



513 



0-721 







■02678 







■299 



456-8 



397 



0-558 



Magnesium Sulphate. iMgS0 4 .7H 2 = 123-26. 

 In Cell No. 2, the water used had a resistance of 8 - 7 x 10 6 ohms. 



m. 





m . 



R, 





Tc\m - ix. 





0-04995 







•368 



8067 





354 



0-498 



0-1158 







•487 



4083 





302 



0-425 



0-2136 







•598 



2494 





268 



0-377 



0-3574 







•710 



1654 





241-5 



0-340 



0-6413 







•862 



1052' 



5 



211-6 



0-298 



1-189 



1 



•060 



682' 



•2 



176-1 



0-248 



1-812 



1 



■220 



540- 



8 



145-7 



0-205 



2-642 



1 



383 



488- 



4 



110-7 



0-1556 



3-463 



1 



■513 



524- 



1 



78-6 



0-1105 



In order to obtain the most probable results for the ratio of the 

 equivalent conductivities to their values at infinite dilution, curves 

 were drawn on squared paper between and k/m, and the smoothed 

 readings taken at the required places. It is usual to call this ratio 

 the coefficient of ionization, but at the high concentrations here dealt 



* In Cell No. 2. 



