All of the following are true about diffusion EXCEPT: a) Higher temperatures decrease the rate of diffusion O b) Smaller molecules diffuse faster than larger molecules O c) Diffusion is slower over larger distances d) The higher the density of the solvent, the lower the rate of diffusion

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Diffusion
All of the following are true about diffusion EXCEPT:
O a) Higher temperatures decrease the rate of diffusion
b) Smaller molecules diffuse faster than larger molecules
O c) Diffusion is slower over larger distances
d) The higher the density of the solvent, the lower the rate of diffusion
Transcribed Image Text:All of the following are true about diffusion EXCEPT: O a) Higher temperatures decrease the rate of diffusion b) Smaller molecules diffuse faster than larger molecules O c) Diffusion is slower over larger distances d) The higher the density of the solvent, the lower the rate of diffusion
Expert Solution
Step 1

Diffusion is the passive movement of molecules or particles (for example, atoms, ions, molecules, energy) from an area of higher concentration to an area of lower concentration.

Option B is Correct:- Because heavier particles will move more slowly and so will have a slower rate of diffusion. Smaller particles on the other hand will diffuse faster because they can move faster.

Option C is Correct:- If the diffusion distance is large, diffusion happens slower because the particles have as far to travel.

Option D is Correct:- Because as the density of a solvent increases, the rate of diffusion decreases. The molecules slow down because they have a more difficult time getting through the denser medium. If the medium is less dense, diffusion increases.

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