Thin Metal Partition in a Voltameter. 



295 



Table II. 



To test diffusion of 17 per cent. CuS0 4 and 30 per cent. 

 ±X>S0 4 , with current passing in voltameter #1 and no cur- 

 rent passing in #2. 



Time, 



in 

 min. 



92 



87 



55 

 60 

 60 



Current, in 

 amperes. 



*1. 



•0505 

 •053 



*2. 



00 

 00 



Cu on 

 kathode. 



»1. 



•0058 

 •0143 



#2. 



00 

 00 



Percentage 



of Cu to 



current. 



Cu in 10 c.c. 

 solution. 



SI. 



6-4 



15-8 



#2. 



0-0 

 00 



81. 



•002 

 •004 



*2. 



•0023 

 •005 



Total Cu 



passed the 



gold. 



1*. 



Fresh solutions and single gold-leaf partitions. 



45 



•15 



00 



•0022 



00 



1-7 



00 



•0043 -0040 



65 



broke 



00 





00 





00 



1-006 



18hrs. 





00 





00 





00 



-0256 



•0308 

 •0643 



•055 



$2. 



Fresh solutions and gold-leaf partitions. 



Began the above at 12 h 55 m 30 s : closed at 3 h 30 m 30 s . 



•077 



00 



•0022 



00 



53 



00 



•0014 



•0033 



•019 



•077 



00 



■0090 



00 



200 



o-o 



•0035 



•0065 



•034 



•079 



00 



•0142 



00 



30-8 



o-o 



•0038 



•0084 



•0797 



•0300 

 •0650 



•048 

 ■076 

 •3172 



•041 

 •085 

 •1148 



Table III. 



Third and best Method. 

 Fresh Solutions and Gold-leaf Partitions, 



Time, 



in 



min. 



60 

 60 



Current, in 

 amperes. 



Cu on 

 kathode. 



*1. #2 



00 

 00 



0-0 

 00 



*1. »2 



o-o 



00 



00 

 00 



Percentage 

 of Cu to 

 current. 



«1. 



o-o 



00 



*2. 



o-o 



00 



Cu in 10 c.c. 



solution 

 (in grains). 



*1. #2. 



•0019 

 0055 



0006 

 •0024 



Total Cu 



passed the 



gold. 



*1. *2. 



•0228 

 •0679 





Then the circuit was 



closed. 













45 



•10 I 10 



•0154 



0060 



35 



137 



•0074 



•0036 



•1116 j 



45 



•10 I -10 



0205 



0100 



47 



22-8 



•0080 



•0038 



•1467 1 





Again leaving the circuit open, the following was c 



)btainec 



:— 



60 ' 



o-o o-o j 00 [ 00 



00 



O'O -0090 



0048 



•1667 ! 



) hrs. 



00 o-o 



o-o 



00 



00 



00 



•0310 



•0187 



•5387 



•0075 

 •0306 



•0340 

 •0701 



•0864 

 •3200 



X2 



