When the concentration of molecules on both sides of a membrane is the SAME, the solution

Question

a
is hypotonic.
b
is hypertonic.
c
has reached equilibrium.
d
moves from an area of higher concentration to an area of lower concentration.

Answer 1

The correct answer is:

c has reached equilibrium.

When the concentration of molecules on both sides of a membrane is the same, it means that no net movement of molecules is occurring, and the system is in equilibrium.