Consider a pure liquid A in an open cylindrical tank with a slightly tapered top as shown in Figure. The apparatus is arranged in such a manner that the liquid-gas interface remains fixed in space as the evaporation takes place. As an engineer, we are interested in the rate of evaporation of A from the liquid surface into a mixture of A and B. For this purpose, Determine the concentration distribution of A in the gas phase? Figure 8.32 Evaporation from a tapered tank