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:

Scientific Attitude

A mindset that emphasizes curiosity, skepticism, and openness to evidence and new information in the pursuit of understanding.

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An attitude of questioning, doubt, or disbelief in certain claims or statements without sufficient evidence.

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A psychological school of thought focusing on how mental and behavioral processes function - how they enable the organism to adapt, survive, and flourish.

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An early school of psychology that used introspection to explore the elemental structure of the human mind.