Organic Chemistry

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Referring to solvent mixtures, which statements are TRUE ?
(Select all correct answers.)

The solvents of the solvent mixture should have very similar polarities.
The solvents of the solvent mixture should have different polarities.
The student has to pay more attention during the boiling process to avoid changes in the solvent polarity
Mixed solvents can be used to fine-tune the solubility behavior better.
Low boiling solvents like dichloromethane or diethyl ether should be part of any solvent mixture.

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