Reactions in Solutions

Abstract

When a reaction follows the same mechanism in solution and in the gaseous state, the kinetics remain same in both. However, because of the increased interactions in condensed media, the mechanism is frequently changed and also the kinetics correspondingly. When a chemical reaction takes place in solution, the solvent is usually in so much excess that its concentration does not change appreciably as the reaction proceeds and is, therefore, not involved in the rate expression. However, if solvent enters into chemical change and does not regenerate at the end of the process, the solvent would be said to exert a chemical effect on the reaction and will thus be involved in the rate expression.