Abstract
AbstractThe nature of 2‐(p‐sulphophenylazo)‐1.8 dihydroxy naphthalene 3.6‐disulphonic acid (SPANDS) (in aqueous solution) as a colloidal electrolyte has been determined by the electrical conducance studies. The curve obtained by plotting the square root of concentration and the molar conductance was not linear and resembled that of colloidal electrolytes. The temperature of zero conductance as determined by extrapolation is −22.5°C. The temperature coefficient per degree centigrade per hundred of the conductance at 35°C is between 1.5 and 1.7.
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