The three main factors that affect the rate of diffusion across a membrane can be expressed by the relationship shown.
rate of diffusion is proportional to $\frac{{surface{\text{ }}area \times concentration{\text{ }}difference}}{{thickness{\text{ }}of{\text{ }}membrane{\text{ }}}}$
Which changes in the factors would result in the rate of diffusion doubling?
1- Surface area has doubled.
2- Concentration difference has halved.
3- Thickness of membrane has doubled.
4- Thickness of membrane has halved.
1 )
1, 2 and 4
2 )
1 and 3
1 and 4 only
4 )
2 and 3
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