CEUTICS EXAM 2 DIFF & DISS DR. JAMBHEKAR PPX

Which of the following is TRUE about Osmosis?

• Osmosis is a process where solvent molecules move from low concentration region to the higher concentration region in an available space through a semipermeable membrane

• Osmosis is a process where solvent molecules move from high concentration region to the lower concentration region in an available space through a semipermeable membrane

Which of the following statements are TRUE about Diffusion? Select all that apply

• Strictly speaking, diffusion is the tendency of a gas or liquid or dissolved solute molecules to distribute uniformly and at a constant temperature over the space available.

• Solute molecules move from low to high concentration

• Is a process where solvent molecules move from low concentration region to the higher concentration region in an available space through a semipermeable membrane

• Solute molecules move from high to low concentration

Diffusion is a spontaneous process by which molecules move from the region of high concentration to the region of low concentration and, therefore, as long as the concentration gradient (difference in the concentrations at different locations within the system) is maintained, molecules will continue to move.

• True

• False

Diffusion is the result of random molecular motion due to thermal agitation

• True

• False

Which of the following are molecules that migrate from one location to another location ? Select all that apply

• penetrants

• lubricants

• diffusants

• permeants

How is it called to the medium in which the diffusants migrate?

• osmosis

• diffusional barrier

• osmotic diffusion barrier

• None of the above

This concentration gradient is the driving force for the diffusion of molecules from the region of high to the region of low concentration (not other way around)

• True

• False

C1 is the concentration of so solute molecules at one location.

• True

• False

C2 is the concentration of the solute molecules at another location.

• True

• False

Which of the following is quantitatively, described diffusion of molecules?

• John’s First Law

• Fick’s First Law