Abstract
The digesting of silver has been carried out at different concentrations of leaching agents FeCl 3 and CuCl 2 in the range 30–90°C. On the basis of the kinetic curves obtained by experiment the initial digestion rates were calculated. It was found that at 0.01–0.1 M FeCl 3 or CuCl 2 the initial rates of digestion are about the same and a further increase in concentration of the leaching agent leads to a decrease in the initial rates of the digesting process. It should be stressed that the digestion of silver at a concentration of CuCl 2 of 1 M is much faster than in the case of 1 M FeCl 3. These differences are analysed by means of the potentiometric method and scanning analysis of the surface of silver after digestion.
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