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# What decreases the concentration of a solution?

## What decreases the concentration of a solution?

Dilution is the addition of solvent, which decreases the concentration of the solute in the solution. Concentration is the removal of solvent, which increases the concentration of the solute in the solution.

Does water move to lower concentration?

Osmosis: In osmosis, water always moves from an area of higher water concentration to one of lower concentration. Thus, water will diffuse down its concentration gradient, crossing the membrane to the side where it is less concentrated.

### Why does water go to the high concentration?

Osmosis is the diffusion of water molecules across a semipermeable membrane from an area of lower concentration solution (i.e., higher concentration of water) to an area of higher concentration solution (i.e., lower concentration of water). Water moves into and out of cells by osmosis.

How do you decrease and increase the concentration of a solution?

The concentration of a solution can be changed:

1. concentration can be increased by dissolving more solute in a given volume of solution – this increases the mass of the solute.
2. concentration can be increased by allowing some of the solvent to evaporate – this decreases the volume of the solution.

#### How can you tell if a solution is more concentrated than another?

The one that has a higher solute to solvent relationship is more concentrated. In this problem, 25/75 > 15/85, so the 25% solute, 75% solvent solution is more concentrated (b).

Is diluted and concentrated the same?

A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.

## How do you know if a solution is concentrated or dilute?

When solutions are described as dilute or concentrated:

1. a dilute solution contains a relatively small amount of dissolved solute.
2. a concentrated solution contains a relatively large amount of dissolved solute.

Can you make water less concentrated or diluted?

It might mean that, if water is the solvent in your system but it does not have to mean that. For example, If you are making a solution of water in pure methanol then by adding more methanol to the solution, you can make the water less concentrated (diluted).

### Is there any way to concentrate pure water?

Concentrated: not really. Pure water is a pure substance, and there’s nothing to remove to concentrate it. It also has very low compressibility, which means that putting pressure one it doesn’t increase the concentration much either.

What causes water to move from high to low concentration?

A movement of solvent from higher concentration to lower concentration implies that water moves from lower osmotic pressure to higher osmotic pressure.

#### What happens to water from the dilute side to the concentrated side?

In other words, from the dilute side to the concentrated side. The outcome is that the dilute side loses water and becomes more concentrated, and the concentrated side gains water to become more dilute, so the two sides become more similar. Osmolarity is 3 times higher on the right, but the red molecules are trapped over there.