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Questions and Answers
How does an increase in temperature affect Brownian motion in colloidal dispersions?
How does an increase in temperature affect Brownian motion in colloidal dispersions?
- Has no effect on Brownian motion
- Increases the Brownian motion of dispersed-phase particles (correct)
- Reduces the velocity of the particles
- Decreases the rate of diffusion
What is the function of Brownian motion in colloidal dispersions?
What is the function of Brownian motion in colloidal dispersions?
- Contributing to the diffusion from a region of higher concentration to one of lower concentration
- Regulating the rate of diffusion as per Fick’s first law
- Causing colloidal particles to pursue an irregular and complicated zigzag path (correct)
- Increasing the viscosity of the medium
What is the effect of decreasing particle size on the velocity of colloidal particles?
What is the effect of decreasing particle size on the velocity of colloidal particles?
- The velocity varies randomly
- The velocity of the particles decreases
- The velocity of the particles increases (correct)
- The velocity remains constant
How does increasing the viscosity of the medium affect Brownian movement in colloidal dispersions?
How does increasing the viscosity of the medium affect Brownian movement in colloidal dispersions?
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What does Fick’s first law express in relation to diffusion in colloidal dispersions?
What does Fick’s first law express in relation to diffusion in colloidal dispersions?
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