. The Rate of Solution of Hydrogen by Palladium. 120 240 360 480 Vol. of gas occluded by 1 vol. of metal. Fig. 4. 600 the second, the graph consisting almost entirely of this latter, whilst forthick foil, the break between the two curves occurs more towards the centre of the figure. It could, perhaps, be argued that the change of curvature is so slight thatit might well arise from errors in observation, but against this view must be The Rate of Solution of Hydrogen by Palladium. 233 set the fact that no deflection occurs with palladium black, whereas with theother forms of the metal there is n
. The Rate of Solution of Hydrogen by Palladium. 120 240 360 480 Vol. of gas occluded by 1 vol. of metal. Fig. 4. 600 the second, the graph consisting almost entirely of this latter, whilst forthick foil, the break between the two curves occurs more towards the centre of the figure. It could, perhaps, be argued that the change of curvature is so slight thatit might well arise from errors in observation, but against this view must be The Rate of Solution of Hydrogen by Palladium. 233 set the fact that no deflection occurs with palladium black, whereas with theother forms of the metal there is no curve but exhibits it to some curves cannot be expressed by any simple formula, but the relation- 0 r. 120 240 360 400 Vol. of gas occluded by 1 vol. of metal. Fig. 5. ship between the rate of occlusion and the total concentration of gas injthemetal appears in general to be represented by such an expression as dc/dt = KC« where n is not a constant, but varies as a function of C Neither has n aconstant value for any particular form of the metal, for in the tables of rate 234 Dr. A. Holt. values given above it is seen that with the same specimen of metal verydifferent rates are obtained. This variation of rate for the same sample of palladium is no new observa-tion, but taken in conjunction with the fact that n in the above expressionvaries also with C, precludes the possibility of representing the curves by anysimple expression which has a definite physical meaning. Since n is not a constant, no information as to the molecular conditionof the dissolved gas is obtained from the rate of solution values, but the viewof Travers and Zacharias that one is really dealing with a diffusion colu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectproceed, bookyear1914
