Solubility of Krypton in the 0-40 wt% Sodium Hydroxide Aqueous Solutions at 10-40°C

Abstract

Solubility of krypton in the 0-40 wt% sodium hydroxide aqueous solutions was measured at 10-40°C. And the thermodynamic values on dissolution of krypton were caluculated from the solubility data to serve to the discussion on structure of sodium hydroxide aqueous solution.
Correlation between structure and concentration of sodium hydroxide aqueous solution was investigated on the base of a two-step mechanism of the dissolution process. And it was shown that water structure might be maintained in the sodium hydroxide aqueous solution less than 28.9 wt% but a pseude-structure of NaOH·3.5H₂O crystal might be predominant in 39.9 wt% solution.