According to Ficks law which event would cause a decrease in

According to Fick’s law, which event would cause a decrease in the rate of diffusion?

A decrease in the size of the respiratory membrane (A)

A decrease in the distance (L) between the two surfaces

An increase in the size of the respiratory membrane (A)

Solution

An increase in the size of the respiratory membrane would cause a decrease in rate of diffussion. As the size of the membrane is meant by the thickness, which is inversely propotional with rate of diffussion. According to Fick\'s law, the rate of diffussion of gas accross a membrane is determined by the chemical nature of the membrane, surface area of the membrane, partial pressure gradient of gas accross membrane, and the thickness of the membrane.