Abstract
The paper deals with kinetics of dissolution of spherical particles with different radius and discrete distribution of mass fractions, belonging to the certain radius. Kinetic equations taking in account the change of the Reynolds hydrodynamic criterion during dissolution and consequently the transition from one type of hydrodynamic regime of flow to another were derived. Dissolution is assumed to be controlled by diffusion. Based on theoretical considerations a computer program was developed. The graphic output of this program demonstrates the time dependence of quantities characterizing the dissolution process.

Key words
kinetics of dissolution, spherical particles, discrete distribution, kinetic equations

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