solvent effects

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Flashcards on solvent effects, created by Alvaro Vargas Calero on 01/05/2018.
Alvaro Vargas Calero
Flashcards by Alvaro Vargas Calero, updated more than 1 year ago
Alvaro Vargas Calero
Created by Alvaro Vargas Calero over 6 years ago
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Solvent effects The nature of the solvent can also affect the reaction rates of solute particles. For example, a sodium acetate solution reacts with methyl iodide in an exchange reaction to give methyl acetate and sodium iodide.
This reaction occurs 10 million times more rapidly in the organic solvent dimethylformamide [DMF; (CH3)2NCHO] than it does in methanol (CH3OH). Although both are organic solvents with similar dielectric constants (36.7 for DMF versus 32.6 for methanol), methanol is able to hydrogen bond with acetate ions, whereas DMF cannot. Hydrogen bonding reduces the reactivity of the oxygen atoms in the acetate ion.
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