A Solution of Potassium Hydroxide Is in Equilibrium with Undissolved

question 134

Multiple Choice

A solution of potassium hydroxide is in equilibrium with undissolved solute at 45°C. What will happen if the temperature is raised to 50°C? (ΔH_soln = -57.6 kJ/mol)

• A) The mass of undissolved KOH will increase.
• B) The mass of undissolved KOH will decrease.
• C) The mass of undissolved KOH will be unchanged.
• D) The mass of water in the solution will increase.
• E) The entropy of the system will decrease.

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Definitions:

Nitro Group

A nitro group is a functional group consisting of a nitrogen atom bonded to two oxygen atoms (−NO2), often contributing to the reactivity of a molecule.

O,p-director

Refers to substituents on an aromatic ring that direct incoming substituents to the ortho and para positions relative to themselves during electrophilic aromatic substitution reactions.

Meta Sigma Complex

A term that is not commonly defined in the field of chemistry, indicating a potential misunderstanding or mislabeling of a concept. NO.

Phenyl Substituent

A functional group consisting of a benzene ring directly attached to the core structure of a molecule, influencing its chemical behavior.