Dissociation and Solvation in Solutions

Match each process with its correct description.

• The process where a solid changes directly into a gas without becoming a liquid.

• Solvation

• The process where solvent molecules surround and interact with ions or molecules.

• Condensation

• The process where an ionic compound separates into its individual ions in solution.

• Dissociation

• The process where a gas turns into a liquid.

• Sublimation

Which term describes the interaction of solvent molecules with solute particles?

• Dissociation

• Solvation

• Precipitation

• Evaporation

What type of compound typically dissociates into ions when dissolved in water?

• Covalent compound

• Ionic compound

• Metallic compound

• Network solid

Which of the following is a covalent compound?

• NaCl

• H2O

• KBr

• CaCl2

Which factor does NOT affect the dissociation of ionic compounds in water?

• Temperature

• Particle Size

• Stirring or Agitating

• Color of the solution

What is the main difference between ionic and covalent compounds in solution?

• Only ionic compounds dissolve in water

• Ionic compounds dissociate into ions, covalent compounds do not

• Covalent compounds always form ions

• Both dissociate into ions

Which of the following best describes solvation?

• The breaking of bonds in a solute

• The surrounding of solute particles by solvent molecules

• The formation of a precipitate

• The evaporation of a solvent

Which of the following is an example of dissociation?

• NaCl → Na+ + Cl- in water

• H2O → H2 + O2

• CO2 dissolving in water

• Sugar dissolving in tea

Match each factor with its effect on the rate of solvation.

• Lowers the rate of solvation

• Using larger solute particles

• Lowers the rate of solvation

• Stirring the solution

• Increases the rate of solvation

• Decreasing temperature

• Lowers the rate of solvation

• Decreasing surface area

Which compound is most likely to dissociate in water?

• C6H12O6 (glucose)

• NaCl (sodium chloride)

• CH4 (methane)

• O2 (oxygen)