Charmaine Brisay - March 13, 2022 - Chemistry Worksheet
The chemical concentration is a numerical measure of the relative amount of solute in a solution. This measure expresses the solute relationship with respect to the amount or volume of solvent or solution in units of concentration. The term “concentration” relates to the amount of solute present: a solution will be more concentrated while having more solute.
These units can be physical when the quantities of mass and/or volume of the components of a solution or chemical are taken into account, when the concentration of the solute is expressed in moles or its equivalent, with reference to the Avogadro quantity.
Thus, through the use of molecular or atomic weights, and Avogadro’s number, it is possible to convert physical units to chemical units when expressing the concentration of a particular solute. Therefore, all units can be converted for the same solution.
The concentration of a solution can be denoted in three main ways, even if they have a large variety of terms and units, which can be used to express this measure of value: qualitative description, quantitative notation, and classification in terms of solubility.
Depending on the language and context in which you work, you will choose one of three ways to express mixed concentration.
As explained in the previous section, when quantitatively calculating the concentration of a solution, the calculation should be governed by the units available for that purpose.
Also, units of concentration are divided into those of relative concentrations, those of diluted concentrations, those based on moles, and other auxiliary units.
Relative concentrations are those expressed in percentages, as mentioned in the previous section. These units are divided into a mass-mass percentage, volume-volume percentage, and volume-by-mass percentage. In this case, to calculate the mass or volume of the total solution, the mass or volume of the solute must be added to the mass of the solvent.
The unit of dilute concentration is the unit used to express that very small concentration in trace form in aqueous solution; The most common use presented to these units is to find traces of dissolved gases in others, as agents that pollute the air.