Practice Introduction By Prof. Ravi Krishna (1.1) - Interphase Mass Transfer – Flux and Mass Transfer Resistance

Practice: Introduction by Prof. Ravi Krishna

Lesson 1.1Interphase Mass Transfer – Flux and Mass Transfer Resistance

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8 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does Fick's law state about the direction of flux?
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Think about how on a gradient things flow.
Question 2.
What happens to diffusion as density increases?
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Relate density to movement difficulties.
3Question 3.
What does Fick's first law of diffusion state?
- A. Flux is directly proportional to concentration gradient
- B. Flux is inversely proportional to concentration gradient
- C. Flux is independent of concentration gradient
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Think about how substances spread.
4Question 4.
True or False: Higher molecular weight generally increases the rate of diffusion.
- True
- False
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Recall how size impacts movement.
Question 5.
Given a diffusion coefficient of 0.001 m²/s and a concentration change across a distance of 2 m of 0.5 mol/m³, calculate the expected flux.
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Pay attention to units while substituting values.
Question 6.
Analyze how reducing the temperature of a medium would affect the diffusion of a pollutant in it.
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Consider the effect of temperature on molecular motion.

4 more questions in this section. Enroll free to practise them all.