1.8 - Diffusion Coefficient
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Practice Questions
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What is the diffusion coefficient?
💡 Hint: Think about how diffusion represents the rate of spread of a substance.
How does diffusion occur?
💡 Hint: Consider the idea of spreading out evenly.
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Interactive Quizzes
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What role does the diffusion coefficient (D) play in mass transfer?
💡 Hint: What does D correlate with in terms of concentration differences?
True or False: Equilibrium in mass transfer means that substances are actively moving.
💡 Hint: Think about whether movement continues when things are balanced.
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Challenge Problems
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Calculate the diffusion coefficient for a chemical that moves through water at a rate of 0.5 kg/m²s with a concentration difference of 0.1 kg/m³ across a distance of 0.5 m.
💡 Hint: Remember to set up the equation using Fick's law of diffusion.
Discuss the environmental implications of a high diffusion coefficient in water pollutants.
💡 Hint: Think about how rapidly a spill could affect aquatic life and ecosystems.
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