The Influence of Salts on the Velocity of Inversion of Sucrose at 25°

Authors

J. N. Pearce, State University of IowaFollow
Margaret Thomas, State University of IowaFollow

Document Type

Research

Abstract

The velocity of inversion of sucrose has been determined in the presence of salts of different ion-types at 25°. In the solutions used the concentrations of three components are definitely fixed, namely: sucrose 0.1 m., hydrochloric acid 1.0 m., and water 1000 grams. The salt concentration is the only variable. The salts used were LiCl, NaCl, KCl, BaCI₂ and Al(No₃)₃. For equal molal concentrations of the different salts the velocity coefficients increase in the order: KCl23)₃. The salt effect appears to be explained best on the basis of ionic hydration due to the attraction between the ions and the water dipoles. While it was not possible at the time to determine the activity of the solvent in the inversion solutions, the reaction velocity increases inversely and practically linearly with decrease in the activity of the solvent due to the salt alone.

Publication Date

1934

Journal Title

Proceedings of the Iowa Academy of Science

Volume

41

Issue

1

First Page

139

Last Page

139

Copyright

©1934 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Pearce, J. N. and Thomas, Margaret (1934) "The Influence of Salts on the Velocity of Inversion of Sucrose at 25°," Proceedings of the Iowa Academy of Science, 41(1), 139-139.
Available at: https://scholarworks.uni.edu/pias/vol41/iss1/33