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In a moving boundary experiment on KC (Am * 26.5 mS/cm) the apparatus consisted of a tube of internal diameter 4.146 mm, and it contained aqueous KCI at a concentration of 0.021 mol dm”. A steady current of 18.2 mA was passed, and the boundary advanced as follows: t/s 200 400 600 800 1000 X/mm 64 128 192 254 318
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