What is the effect of pressure on the solubility of a liquid in liquid?

Answer 1

Solutions are homogeneous mixtures, in which there is a solvent -- either the liquid (in liquid and Gas or solid solutions), or the substance which is more vast (in liquid and liquid solutions), and a solute -- either the gas or solid, or the lesser liquid. To determine whether a solvent will interact with a solute, we use the term solubility. The factors affecting solubility are the solutions entropy and enthalpy, and the rule of "like dissolves like". When a solute is poured into a solvent, it will most likely dissolve if the solvent and the solute have similar intermolecular forces. For example, table salt (NaCl) has strong ionic dipole, and thus mixes well with water, which is a polar substance, and is held by Dipole-dipole bonds. The size of the molecules is also important- similar sized molecules will dissolve more easily. The entropy of a solution is also very important, since it helps us find whether the process is spontaneous or not. When the process is not spontaneous, the two substances will not dissolve. Entropy of a solution will, in most cases, be positive, because the randomness and disorder will increase when a solid has to dissolve, and when two liquids mix. However, the enthalpy of a solution will vary according to the substances involved.

Another important factor determining solubility is the molecular structure, and the equilibrium within a solution. When, for example, you put solid NaCl in water, it will dissolve very quickly, but at some point, the dissolution will slow down and eventually stop. At that point, the solution is at equilibrium. This means that the rate of ions leaving the crystal is equal to that of ions returning to it. At this point, the solution is said to be saturated. If more NaCl will be added, it will not dissolve, but precipitate. Some solutes can dissolve more than the equilibrium point of solvent when under high temperature. These solutions are called supersaturated solutions, and are unstable. Most solid substances become more soluble as the temperature rises, while most gases become less soluble as the temperature increases. This is due to the increase in kinetic energy, helping to break the bonds. Pressure, however, has almost no effect over solid and liquid solutes, but effects greatly on the solubility of gases.The pressure of a gas over a solution is directly proportional to the gas' solubility.

Answer 2

Increasing pressure typically increases the solubility of a liquid in a liquid. This is because higher pressure forces more solvent molecules into the solution, increasing the likelihood of the solute dissolving.

Answer 3

gases