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Index
»
PHARM 24
»
SOLUBILITY
»
level 3 - NONPOLAR & SEMIPOLAR SOLVENTS
level: level 3 - NONPOLAR & SEMIPOLAR SOLVENTS
Questions and Answers List
level questions: level 3 - NONPOLAR & SEMIPOLAR SOLVENTS
Question
Answer
• Has low dielectric constant – unable to reduce the attraction between the ions of strong and weak electrolytes
Nonpolar Solvents
• Solvents that cannot break bonds and ionize weak electrolytes, cannot form hydrogen bridges with nonelectrolytes
Aprotic Solvents
• Nonpolar compounds can dissolve in nonpolar solutes with similar internal pressures through what?
Induced dipole interactions
Oils and Fats dissolve in
carbon tetrachloride, benzene, and mineral oil
• Alkaloidal bases and fatty acids dissolve in
Nonpolar solvents
Examples of nonpolar solvents
• Fats • Oils • Petrol / gasoline
When comparing a polar and nonpolar molecule with similar molar masses, the polar molecule in general has
higher boiling point
Nonpolar organic solvent that can dissolve polar substances
turpentine
are intermediate solvents in the miscibility of polar and nonpolar liquids
• Semipolar compounds
is readily polarizable, becomes soluble in alcohol
Benzene
can induce a certain degree of polarity in nonpolar solvents molecules
• Ketones and alcohols
increases the solubility of ether in water
Acetone
increases solubility of castor oil in water
Alcohol
increases the mutual solubility of water and peppermint oil, water and benzyl benzoate
• Propylene glycol