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Calculate the rate of diffusion of Sodium chloride (NaCl) at 18 C through a stagnant film of water, 1.0 mm thick, when the concentrations

Calculate the rate of diffusion of Sodium chloride (NaCl) at 18 C through a stagnant film of water, 1.0 mm thick, when the concentrations are 20% and 10% by weight on either side of the film. Density of 20% and 10% NaCl by weight are 1.1489 and 1.067 g /cc respectively. Diffusivity of NaCl in water is 1.26 x 10-6 m /sec. (12) (April '97)

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