Multiple Choice
Which of the following compounds would you expect to have poor solubility in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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According to solubility principles, in which type of water does sugar (sucrose) dissolve more easily?
A
Cold water
B
Sugar does not dissolve in water
C
Hot water
D
Sugar dissolves equally in both
Verified step by step guidance1
Understand the concept of solubility: Solubility is the ability of a substance (solute) to dissolve in a solvent, forming a homogeneous solution. Temperature often affects solubility.
Recall that sugar (sucrose) is a molecular compound that dissolves in water by forming hydrogen bonds with water molecules, which is a physical process influenced by temperature.
Recognize that increasing temperature generally increases the kinetic energy of water molecules, allowing them to interact more effectively with sugar molecules and break them apart, enhancing solubility.
Compare solubility in cold water versus hot water: Since hot water has higher kinetic energy, sugar molecules dissolve more easily in hot water than in cold water.
Conclude that sugar does not dissolve equally in both; it dissolves more readily in hot water due to increased molecular motion and interaction.
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