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Vapor−Liquid Equilibria for Alcohol + Alcohol + Sodium Iodide at 298.15 K

Hideki Yamamoto, Koji Fukase, Junji Shibata

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Abstract

Vapor−liquid equilibria for methanol + propan-1-ol + NaI, methanol + propan-2-ol + NaI, ethanol + propan-1-ol + NaI, and ethanol + propan-2-ol + NaI systems were measured at 298.15 K using a static method. The apparatus was tested by comparing results for ethanol + water and ethanol + water + CaCl 2 with literature results. Results were tested for thermodynamic consistency by Herinton's area test and point test. NaI exerted a salting-in effect on all binary alcohol solutions and the order of the salt effect of NaI was methanol + ethanol < ethanol + propan-1-ol < ethanol + propan-2-ol < methanol + propan-1-ol < methanol + propan-2-ol. Hála's model was applied for the correlation of four alcohol + alcohol + salt systems using observed data. Calculated β values in Hála's equation were between 2.8 and 3.9 for the four alcohol + alcohol + NaI systems.

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Vapor−liquid equilibria for methanol + propan-1-ol + NaI, methanol + propan-2-ol + NaI, ethanol + propan-1-ol + NaI, and ethanol + propan-2-ol + NaI systems were measured at 298.15 K using a static method. The apparatus was tested by comparing results for ethanol + water and ethanol + water + CaCl 2 with literature results. Results were tested for thermodynamic consistency by Herinton's area test and point test. NaI exerted a salting-in effect on all binary alcohol solutions and the order of the salt effect of NaI was methanol + ethanol < ethanol + propan-1-ol < ethanol + propan-2-ol < methanol + propan-1-ol < methanol + propan-2-ol. Hála's model was applied for the correlation of four alcohol + alcohol + salt systems using observed data. Calculated β values in Hála's equation were between 2.8 and 3.9 for the four alcohol + alcohol + NaI systems.

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Available abstract

Vapor−liquid equilibria for methanol + propan-1-ol + NaI, methanol + propan-2-ol + NaI, ethanol + propan-1-ol + NaI, and ethanol + propan-2-ol + NaI systems were measured at 298.15 K using a static method. The apparatus was tested by comparing results for ethanol + water and ethanol + water + CaCl 2 with literature results. Results were tested for thermodynamic consistency by Herinton's area test and point test. NaI exerted a salting-in effect on all binary alcohol solutions and the order of the salt effect of NaI was methanol + ethanol < ethanol + propan-1-ol < ethanol + propan-2-ol < methanol + propan-1-ol < methanol + propan-2-ol. Hála's model was applied for the correlation of four alcohol + alcohol + salt systems using observed data. Calculated β values in Hála's equation were between 2.8 and 3.9 for the four alcohol + alcohol + NaI systems.

Key concepts: Chemistry, Alcohol, Methanol, Ethanol, Primary alcohol, Inorganic chemistry, Organic chemistry

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