Question

What are the examples of percent concentration?

Answer 1

Hint: To define a solution precisely, we need to state its concentration: how much solute is dissolved in a certain amount of solvent. Words such as dilute or concentrated are used to describe solutions that have a little or a lot of dissolved solute, respectively, but these are relative terms with meanings that depend on various factors.

Complete step by step answer:
There are $3$ percent concentration terms which are discussed here:
$\left( 1 \right)$ Mass percent: There are several ways of expressing the concentration of a solution by using a percentage. The $\dfrac{{mass}}{{mass}}$ percent $\left( {\% \dfrac{m}{m}} \right)$ is defined as the mass of a solute divided by the mass of a solution times $100$: ${\text{% }}\dfrac{m}{m} = \dfrac{{mass{\text{ of solute}}}}{{mass{\text{ of solution}}}} \times 100$
$\left( 2 \right)$ Percent by volume: Percent by volume $\left( {\dfrac{v}{v}} \right)$ is the volume of solute divided by the total volume of the solution, multiplied by$100$: $\% \dfrac{v}{v} = \dfrac{{volume{\text{ of solute}}}}{{total{\text{ volume of solution}}}} \times 100$
$\left( 3 \right)$ Percent by mass over volume: Percent by mass over volume $\left( {\dfrac{m}{v}} \right)$ is the mass of solute divided by the volume of the solution, multiplied by $100$: $\% \dfrac{m}{v} = \dfrac{{{\text{mass of solute}}}}{{{\text{volume of solution}}}} \times 100$

Note: A concentrated solution is one in which there is a large amount of solute in a given amount of solvent. A dilute solution is one in which there is a small amount of a solute in a given amount of solvent. A dilute solution is a concentrated solution that has been, in essence, watered down. Think of the frozen juice containers you buy in the grocery store. To make juice, you have to mix the frozen juice concentrate from inside these containers with three or four times the container size full of water. Therefore, you are diluting the concentrated juice.