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Questions and Answers
What happens to the molecules once the concentrations are equal?
What happens to the molecules once the concentrations are equal?
Which factors affect the rate of molecular diffusion?
Which factors affect the rate of molecular diffusion?
What is the result of diffusion?
What is the result of diffusion?
In a phase with uniform temperature and no external net forces, what is the process governing molecular diffusion?
In a phase with uniform temperature and no external net forces, what is the process governing molecular diffusion?
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What is the term used for the state when molecular diffusion has reached equilibrium?
What is the term used for the state when molecular diffusion has reached equilibrium?
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Study Notes
Molecular Concentration and Equilibrium
- Molecules continue to move randomly even after concentrations are equal.
- Net movement of molecules ceases when equilibrium is reached, but individual molecular movement persists.
Factors Affecting Molecular Diffusion
- Concentration Gradient: Greater differences in concentration speed up diffusion.
- Temperature: Higher temperatures increase molecular kinetic energy, enhancing diffusion rates.
- Molecular Size: Smaller molecules diffuse more quickly than larger ones.
- Medium: Diffusion occurs faster in gases than in liquids, and slowest in solids due to closer molecular packing.
Result of Diffusion
- Established uniform distribution of molecules across a space, leading to equilibrium.
- Redistribution of substances enables the mixing of different gases or solutes in solutions.
Governing Process in Equilibrium
- In uniform temperature and without external forces, molecular diffusion is governed by Brownian motion.
- Continuous, random movement of molecules ensures equilibrium state is maintained.
Equilibrium State Terminology
- The term "Diffusion Equilibrium" describes the state when molecular diffusion has reached balance and concentration gradients are uniform.
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Description
Test your understanding of molecular diffusion with this quiz! Explore the factors affecting diffusion rates and learn how molecules move from areas of higher concentration to lower concentration.
