The osmotic coefficients of some organic compounds in relation to their chemical constitution

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Abstract
Isopiestic measurements were made on sucrose and KC1. Osmotic coefficients and vapor pressures of sucrose solns. are evaluated. There is no difference in vapor pressure between solns. of optically active and racemic compounds in the cases of dl- and d- tartaric acid and dl-, d- and 1- alanine. The introduction of hydroxyl groups into a dibasic acid molecule raises the osmotic coefficient of the acid. The osmotic and activity coefficients of Na fumarate are higher than those of the maleate.