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  Solutions Homework Help - K-12 Grade Level, College Level Chemistry

Introduction of Solutions

A homogeneous mixture composed of only one phase is known as a Solution. In this sort of a mixture, a solute is a substance that can be dissolved in another substance that is known as solvent. The solvent does the dissolving. Solution less or more takes on the features of the solvent includes its phase and the solvent is usually the important fraction of the mixture. The concentration of solute in a solution is a measure of how much quantity of that solute is getting dissolved in the solvent.

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Features of solution

  • A homogenous mixture is known as solution.
  • Through naked eye the Particles of the solute in solution cannot be seen.
  • The Solution does not allow the beam of light to scatter.
  • A solution is stable.
  • Through filtration (or physically) the solute from solution cannot be separated.

Solubility

Solubility is the ability of one compound to dissolve in to other compound. When liquid is able to entirely dissolve in to the other liquid the two liquids are miscible. Immiscible is two substances, which can never mix to form a solution.

All solutions have positive entropy of mixing. The interactions among several ions or molecules may be energetically favored or not. If the interactions are unfavourable, then free energy gets decreased with increasing solute concentration. At some point energy loss outweighs the entropy gain and no more solute particles can be dissolved; the solution known as saturated. Though, the point on which a solution can become saturated can vary considerably with distinct environmental factors, like temperature, pressure and contamination. By raising the solubility several solute-solvent combinations a supersaturated solution can be prepared (for example by increasing the temperature) to dissolve more solute, and then lowering it (for example by cooling).

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