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A porous sphere of 3 m m diameter is saturated with methanol. It is suddenly dropped into a large tank of pure water at 1
A porous sphere of diameter is saturated with methanol. It is suddenly dropped into a
large tank of pure water at If it is assumed that the interdiffusion process is controlled
by the rate of diffusion within the sphere, calculate the time required for the mole fraction of
methanol at the center of the sphere to fall to The effective diffusivity through the
porous sphere is onetenth of the ordinary molecular diffusivity
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