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Using Solubility to Identify Substances

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Applications of Solutions

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Lesson Focus

Using Solubility to Identify Substances

Chemistry

Learning Made Easy

You will discover how the concentration of various substances can be calculated. You will also prepare a solution using the data obtained by calculating mass fraction and mass percentage.

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Now You Know

After completing this tutorial, you will be able to complete the following:

  • Observe that when combining a solute and solvent to prepare a solution at a particular temperature, after a point is reached where no more solute can dissolve in the solvent. 
  • Identify a substance by using its solubility data.
  • Observe that the solubility of a solute in a given amount of solvent increases with an increase in temperature.
  • Observe what will happen to a substance’s solubility with a temperature increase.
  • Explain solubility is a characteristic of substances.

Everything You'll Have Covered

Solubility is the property of a solid, liquid, or gas, called a solute, to dissolve in a liquid solvent to form a homogeneous solution. The solubility of a substance in a solvent changes as the temperature of the solution changes. As temperature rises, typically the solubility of solids in liquids becomes higher. When no more solute can be dissolved in the solvent, the solution's saturation point has been reached. As a solution reaches its saturation point at various temperatures, these data points can be plotted on a graph to draw a solubility curve. Solutions can have multiple solubility curves depending on the solute and solvent that make the solution. Solubility data can be used to identify unknown substances because solubility is a characteristic property of any substance.

Tutorial Details

Approximate Time 35 Minutes
Pre-requisite Concepts Learners should have knowledge of how to convert moles of an element into its molar mass.
Course Chemistry
Type of Tutorial Concept Development
Key Vocabulary chemistry, concentrations, dissolve