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A polar aprotic solvent is a solvent that lacks an acidic proton and is polar. Such solvents lack hydroxyl and amine groups. In contrast to protic solvents , these solvents do not serve as proton donors in hydrogen bonding , although they can be proton acceptors.
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
1,1-dimethylhydrazine: 57-14-7 C 2 H 8 N 2: 1,2-dimethylhydrazine: 540-73-8 (CH 3) 2 SO: dimethyl sulfoxide: 67-68-5 C 4 H 8 O 2: 1,4-Dioxane: 123-91-1 C 2 H 6 O: ethanol: 64-17-5 CH 3 CH 2 NH 2: ethylamine: 75-04-7 C 2 H 6 O 2: ethylene glycol: 107-21-1 HCOOH: formic acid: 64-18-6 C 5 H 6 O 2: furfuryl alcohol: 98-00-0 C 3 H 8 O 3: glycerol ...
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
In reversed phase chromatography, the most polar compounds elute first with the more nonpolar compounds eluting later. The mobile phase is generally a mixture of water and miscible polarity-modifying organic solvent, such as methanol, acetonitrile or THF. Retention increases as the fraction of the polar solvent (water) in the mobile phase is ...
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A comparison of S N 1 to S N 2 reactions is to the right. On the left is an S N 1 reaction coordinate diagram. Note the decrease in ΔG ‡ activation for the polar-solvent reaction conditions. This arises from the fact that polar solvents stabilize the formation of the carbocation intermediate to a greater extent than the non-polar-solvent ...