# solution concentration

## calculating the concentration of a solution

The concentration of a solution represents the percentage of the solution that is the solute. You can calculate the concentration of a solution using this formula: Concentration = Mass (or volume) of Solute Mass (or volume) of Solution 100% For example, if a 100-gram solution of salt water contains 3 grams of salt, then its concentration is: Concentration = 3g 100g 100% = 3% Q: A 1000 mL container of brand A juice drink contains 250 mL of juice and 750 mL of water. A 600 mL container of brand B juice drink contains 200 mL of juice and 400 mL of water. Which brand of juice drink is more concentrated, brand A or brand B? 250 mL 1000 mL 100% = 25% 200 mL 600 mL 100% = 33% A: Concentration(A) = Concentration(B) = You can conclude that brand B is more concentrated.

## concentrated and dilute solutions

A solution is a mixture of two or more substances in which dissolved particles are distributed evenly throughout the solution. The substance that dissolves in a solution is called the solute, and the substance that does the dissolving is called the solvent. The concentration of a solution is the amount of solute in a given amount of solution. A solution with a lot of dissolved solute has a high concentration and is called a concentrated solution. A solution with little dissolved solute has a low concentration and is called a dilute solution.

## instructional diagrams

No diagram descriptions associated with this lesson

## questions

the substance that dissolves in a solution is called the solvent.

``````a. true

-->  b. false
``````

a solution with a small amount of solute for a given amount of solution is called

``````a) weak.

-->  b) dilute.

c) unsaturated.

d) insoluble.
``````

a concentrated solution has a lot of solvent for a given amount of solution.

``````a. true

-->  b. false
``````

the concentration of a solution is the ratio of solute to solvent.

``````a. true

-->  b. false
``````

a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is

``````a) 1 percent.

b) 9 percent.

-->  c) 10 percent.

d) 12 percent.
``````

todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution?

``````a) 9 percent

-->  b) 10 percent

c) 11 percent

d) 12 percent
``````

## diagram questions

No diagram questions associated with this lesson