At Electrochemical Equilibrium, which best describes the distribution of ions in the chamber, on either side of the membrane, when one "mole" of salt (NaCl) is added to one side of a 1 liter chamber, filled with water and divided in half by a membrane permeable only to Na+. 2.0 M CI- and 1.25 M Na+ one side of the membrane; 0.75 M Na+ on the other side of the membrane. 1.0 M CI- and 1.0 M Na+ on both sides of the membrane. 2.0 M CI- and 1.0 M Na+ one side of the membrane; 1.0 M Na+ on the other side of the membrane. 2.0 M CI- and 2.0 M Na+ on one side of the membrane; pure water on the other side of the membrane.

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Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.