General Chemistry II: Ways to Express Solution Concentration

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11 Questions

What term is used to describe a solution that has a relatively large amount of solute?

Concentrated solution

Which term expresses the quantity of solute contained in a given amount of solution?

Concentration

What is the substance being dissolved in a solution?

Solute

Which term is used to measure the amount of matter in an object?

Mass

What is a convenient way to express the concentration of a solution when the solute is a solid?

Percent by mass

How can the percentage of solute in a solution more easily be determined?

By measuring volume

What is the formula used to calculate Mass/Volume percent?

Dividing the mass of the solute by the volume of the solvent

What is Molarity?

The moles of solute per liter of solution

What is Molality?

The number of moles of solute per kilogram of solvent

How is Percent by Volume concentration calculated?

Dividing the volume of the solute by the volume of the solution

Which concentration measure uses 'moles' in its definition?

Molality

Study Notes

Solution Terminology

  • A solution with a relatively large amount of solute is described as concentrated.
  • The term concentration expresses the quantity of solute contained in a given amount of solution.

Solution Components

  • The solute is the substance being dissolved in a solution.
  • The amount of matter in an object is measured using the term mass.

Concentration Expressions

  • When the solute is a solid, the concentration of a solution can be conveniently expressed using mass/volume percentage.
  • The percentage of solute in a solution can be more easily determined by calculating the mass/volume percentage.

Concentration Calculation

  • The formula used to calculate Mass/Volume percent is: (mass of solute / volume of solution) x 100%.

Concentration Measures

  • Molarity is a measure of concentration that describes the number of moles of solute per liter of solution.
  • Molality is a measure of concentration that describes the number of moles of solute per kilogram of solvent.
  • Percent by Volume concentration is calculated by expressing the volume of solute as a percentage of the total volume of the solution.
  • Molarity is the concentration measure that uses moles in its definition.

Test your knowledge on ways to express the concentration of a solution in General Chemistry II. Learn to define concentration, solve for percent concentration, molarity, and molality, and practice solving related problems.

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