Abstract
The principles of the macroscopic theory of processes of convective heat and mass transfer in systems with mass exchange, taking place under conditions of large concentration gradients, have been presented. For these systems, the structure of the hydrodynamic fluxes (in particular the velocity profile in the boundary layer next to the wall) shows a marked dependence on the concentration field of the substance being transferred. Studies in which the effect of the interaction between the processes of mass transfer and momentum transfer has been analysed quantitatively in relation to problems of chemical and electrochemical technology have been reviewed. The bibliography contains 68 references.