Lesson Worksheet: Polar and Nonpolar Solvents Chemistry

In this worksheet, we will practice describing polar and nonpolar solvents.

Q1:

Fill in the blank: Ethanol and ethanoic acid both mix in any proportion with water. Substances that mix in this way are said to be .

  • Ablends
  • Bmingled
  • Cconcocted
  • Dmiscible
  • Eimmiscible

Q2:

In which of the following liquids is a nonpolar solute most likely to dissolve?

  • AWater
  • BA salt solution
  • CEthoxyethane
  • DA nonpolar solvent
  • EA polar solvent

Q3:

Why is pentanoic acid insoluble in water, whereas ethanoic acid is soluble?

  • APentanoic acid does not react with water.
  • BThe hydration energy is too high.
  • CThe shape of the molecule prevents hydrogen bonding.
  • DPentanoic acid has a high boiling point.
  • EPentanoic acid has a long hydrocarbon chain.

Q4:

Which of the following statements describes bromine dissolving in hexane?

  • AA nonpolar substance dissolving in a polar solvent
  • BA polar substance dissolving in a nonpolar solvent
  • CA polar substance dissolving in a polar solvent
  • DA nonpolar substance dissolving in a nonpolar solvent

Q5:

Fill in the blank: If a solvent is miscible with water it is most likely to be .

  • Aa polar solvent consisting of molecules with a large dipole moment
  • Ba nonpolar solvent consisting of molecules with a small or zero dipole moment
  • Ca nonpolar solvent consisting of molecules with a large dipole moment
  • Da polar solvent consisting of molecules with a small or zero dipole moment

Q6:

Is a water (HO)2 molecule a polar or nonpolar solvent?

  • APolar solvent
  • BNonpolar solvent

Q7:

Which of the following molecules is a nonpolar solvent?

  • AAcetic acid
  • BAmmonia
  • CEthanol
  • DWater
  • EBenzene

Q8:

Which of the following statements about solvents is correct?

  • APolar solvents dissolve polar and nonpolar solutes, and nonpolar solvents dissolve nonpolar solutes.
  • BPolar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes.
  • CPolar solvents dissolve nonpolar solutes, and nonpolar solvents dissolve polar and nonpolar solutes.
  • DNonpolar solvents dissolve polar solutes, and polar solvents dissolve polar and nonpolar solutes.
  • ENonpolar solvents dissolve polar solutes, and polar solvents dissolve polar solutes.

Q9:

Why is sugar, a polar substance, soluble in water?

  • ABecause water molecules form a hydrogen bond with sugar molecules
  • BBecause water molecules form a metallic bond with sugar molecules
  • CBecause water molecules form a covalent bond with sugar molecules
  • DBecause water molecules form an ionic bond with sugar molecules
  • EBecause water molecules can act as a nonpolar solvent as well as a polar solvent

Q10:

In an experiment, it is found that substance A dissolves in benzene. What conclusions can be drawn and extrapolated from this observation?

  • ASubstance A dissolves in organic solvents and therefore is unlikely to dissolve in polar solvents.
  • BSubstance A dissolves in polar solvents and therefore is likely to dissolve in organic solvents.
  • CSubstance A dissolves in organic solvents and therefore is likely to dissolve in polar solvents.
  • DSubstance A dissolves in polar solvents and therefore is unlikely to dissolve in organic solvents.

This lesson includes 15 additional questions and 9 additional question variations for subscribers.

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