Why does sugar dissolve faster and more in hot water than in cold water?
Answer and explanation
Correct answer: Particle motion and solubility increase
Heating increases the kinetic energy of water and sugar particles, so contact and mixing become faster. For sugar, the equilibrium solubility also generally increases with temperature, allowing a larger final amount to dissolve. Rate and solubility are different: stirring or particle size mainly changes rate, while temperature can change both. Sugar does not turn into water.
Frequently asked questions
What is the correct answer to this question?
Particle motion and solubility increase
Why is this the correct answer?
Heating increases the kinetic energy of water and sugar particles, so contact and mixing become faster. For sugar, the equilibrium solubility also generally increases with temperature, allowing a larger final amount to dissolve. Rate and solubility are different: stirring or particle size mainly changes rate, while temperature can change both. Sugar does not turn into water.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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