Abstract
AbstractThe extent of conversion of Na2S to H2S in a concentrated aqueous solution of sodium sulfide and sodium carbonate undergoing carbonation can be monitored by measuring the pH and conductivity. A simple linear equation has been developed to correlate the percentage of Na as Na2S with the temperature, pH, and conductivity. The apparent hydrolysis constants for carbonate and sulfide were calculated at temperatures ranging between 25°C and 65°C, and the reaction enthalpies and entropies determined.
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