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The diffusion coefficient of dilute HCl in water will be measured at 298 K in a two-cell experimental setup whose cell constant is unknown. Cell 1 and Cell 2 are filled with distilled water and diluted HCl solution at a concentration of 0.1 mol A/L, respectively. . In order to find the cell constant of the apparatus, an experiment is carried out with the dilute KCl-water system known as the diffusion coefficient DAB=1.25x10-5 cm2/s at 298 K. In this experiment, 0.0002 mol A/L and 0.0984 mol A/L are placed in the 1st and 2nd cells, respectively, and after 3555 min, the concentrations of KCl in the 1st and 2nd cells are measured as 0.0134 mol A/L and 0.0851 mol A/L, respectively. Accordingly, calculate the emissivity coefficient of HCI in the concentration range operating at 298 K.