A solution is at equilibrium across a plasma membrane. if 50 molecules were to enter the cell, how many molecules would need to exit the cell in order to maintain the equilibrium?
Answers
The correct answer is 50.
At equilibrium, there is an equivalent movement of substances or molecules in both the directions. If a molecule can conduct freely via a cell membrane, it will cross the membrane by the process of diffusion.
When the concentration of the solute is equivalent throughout the system, the system has attained equilibrium. If the substance can pass through the cell membrane, its particles will appear to move towards the region where it is less concentrated until an equilibrium is attained.
50 molecules exit the cell when 50 molecules enter the cell in order to maintain the equilibrium.
Explanation:
It is because a system is said to be equilibrium, when the molecules moving in both directions are equivalent. In the case given in the question, it says that 50 molecules have to enter the cell. So for entry of 50 molecules inside the cell, 50 molecules must be exited out to maintain the equilibrium.