Solutions and Volumen percent - form
•An extraordinary amount of chemistry in our world occurs in water solution.
•A solution is a homogeneous mixture, a physical combination of two or more pure
substances.
•Solutions, as defined above, do not have to be liquid mixtures. There are gaseous mixtures
that are homogeneous and there are solid mixtures that are homogeneous.
•Any homogeneous physical mixture of two or more gases is a solution.
•Any homogeneous physical mixture of two or more solids is a solution.
Solutions The components of a solution are known as the solvent and the solute or solutes.
Solvent.
• The solvent is the component that is present in the greatest amount or the component that
has dissolved the other component or components in itself. Solutes.
• The solutes are the components present in the lesser amount or the substances that have
dissolved in the solvent. The components of a solution are known as the solvent and the
solute or solutes.
The concentration of a solute in a solution (i.e., the amount of a solute dissolved in a particular
amount of solvent or in a particular amount of solution) is a vitally important concept in a
variety of situations in real-world chemistry.
Methods of expressing concentration are calculations associated with the determination of
solution concentration Percent. The concept of percent is well known. For solutions, however,
this concept can be confusing because the units used for the part and the whole are variable.
Not only is it common for a solution concentration to be expressed as a volume percent
(v/v%) when the solute is a liquid, but it is also common for the numerator units to be weight
units and the denominator units to be volume units (so-called weight/volume percent [w/v%]).
