Final answer:
The rate of diffusion increases as the concentration gradient increases. The concentration difference and diffusion constant also influence the rate of diffusion.
Step-by-step explanation:
The rate of diffusion increases as the concentration gradient increases.
The greater the difference in concentration, the more rapid the diffusion. Many more molecules will leave a region of high concentration than will enter it from a region of low concentration. The net rate of diffusion is proportional to the concentration difference and the diffusion constant D, which is determined experimentally. Temperature and solvent density also affect the rate of diffusion.