Question

question 11 of 32 which statement best describes a weak base in solution? a. the base forms a concentrated solution. b. the base dissociates completely. c. the base dissociates slightly. d. the base forms a dilute solution.

Explanation:

To determine the correct answer, we analyze each option:

• Option A: Concentration (concentrated or dilute) is about the amount of solute in a solution, not about the strength of a base (which relates to dissociation). So A is incorrect.
• Option B: A base that dissociates completely is a strong base, not a weak base. So B is incorrect.
• Option C: Weak bases are defined as substances that dissociate only slightly in solution, meaning they do not release a large amount of hydroxide ions ($\ce{OH^-}$) compared to strong bases. This matches the definition of a weak base.
• Option D: Similar to A, the dilution of a solution is about the amount of solvent, not the strength of the base (dissociation extent). So D is incorrect.

Answer:

C. The base dissociates slightly.