Question

How does solute concentration affect diffusion?

Answer 1

the more the concentration the more the diffusion

Explanation:

if the concentration is more then more particles will travel from one side to other side.

it is like water flowing from high level to low level.

if concentration is more the system will try to QUICKLY try to establish same osmotic pressure on both sides of the semi permeable membrane. as driving force for osmosis is very high.
check fick's law for more details or refer CBSE CHEMISTRY TEXTBOOK FOR 12 TH STANDARD . or HSC (MAHARASHTRA) STATE BOARD TEXTBOOK OF CHEMISTRY

you will get good explanation

hope i helped you.