Manchester Memoirs, Vol. Ixi. (191 7) No. 9 



Anodic Overvoi.tagk in Normal Sodium Hydroxide. 

 Time Exprrimicnts — Cotithiued. 



10 0.51 0.51 0.51 0.52 0.52 0.53 0.54 0.54 0.55 0.55 



100 0.61 0.62 0.63 0.63 0.64 0.66 0.67 0.68 0.69 0.69 



1000 0.67 0.68 0.69 0.69 0.69 0.70 0.71 072 0.72 0.72 



Cathodic Metal Overvoltages in Solutions of Metallic 



Sulphates. 



400 0.33 0.32 0.80 0.81 0.75 0.75 0.49 0.52 

 * In nickel ammonium sulphate solution. 



Cathodic Metal Overvoltages in Solutions of Metallic 



Nitrates. 



Current Copper, 

 density. A. B. 



2 0.02 0.01 0.00 00 002 0.11 0.00 0.00 0.40 0.47 0.26 0.31 



4 0.02 0.01 0.00 0.00 0.03 0.1.") 0.00 0.00 0.41 0.52 0.35 0.36 



6 0.01 0.01 0.00 0.00 0.03 0.26 0.00 0.00 0.44 0.55 0.38 0.41 



10 0.01 0.02 0.00 00 001 0.32 0.00 0.00 0.47 0.60 0.45 0.46 



20 0.02 0.03 0.00 0.00 0.27 0.35 0.00 0.00 0.52 0.66 0.57 0.49 



50 0.02 0.05 0.00 0.00 0.28 035 0.00 0.00 0.70 0.7^ 0.73 0.83 



100 0.02 0.07 0.00 0.00 0.28 0.33 0.01 0.00 0.91 0.86 0.72 0.80 



200 0.06 0.21 0.00 0.00 0.30 0.32 O.Ol 0.00 0.94 0.86 0.69 0.74 



400 0.60 059 0.01 0.01 0.30 0.29 0.01 0.01 0.88 85 0.64 0.67 



