Accession Number:

AD0680885

Title:

SOLVOLYSIS OF BENZYL CHLORIDE IN GLYCEROL-WATER MIXTURES: RELATION BETWEEN ACTIVATION PARAMETERS AND THERMAL EXPANSIVITY,

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED CHEMISTRY

Personal Author(s):

Report Date:

1968-05-06

Pagination or Media Count:

5.0

Abstract:

The rate of solvolysis of benzyl chloride was measured in the range 50-70C in glycerol-water mixtures of composition 0-75 vol glycerol. The solvent system was chosen because its thermal expansivity varies little with composition, in contrast to that of many other water-organic mixtures. There is a minimum in the constant-pressure activation enthalpy about 400 calmol deep in water-glycerol contrasted to one of about 1700 calmol in ethanol-water. The constant-pressure activation parameters for glycerol-water vary with composition more like the constant-volume parameters for ethanol-water than like the constant-pressure parameters. These results appear to imply that the constant-volume activation parameters are more appropriate for a fundamental discussion than the constant-pressure parameters. Author

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE