Abstract

Used method of isothermal saturation solubility of copper (II) oxide in alkali and alkaline-salt melts has been investigated at temperature range 673 - 873 K. It was determined that solubility of CuO in the order of melts LiOH < NaOH < KOH are increased. The effect of temperature on the CuO solubility in alkali melts are described of the equation of straight line lnC = A + B/T, where C is concentration of the CuO in the melts, mole fract., A and B are constants. The salt additions of lithium chloride, sodium chloride and potassium chloride to sodium hydroxide melt are decreased the solubility of copper (II) oxide.

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