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Course: High school chemistry > Unit 7

Lesson 2: Solubility
Science
High school chemistry
Solutions, acids, and bases
Solubility
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Problem

The following graph shows the solubilities of different ionic solids across various temperatures.
temperature is on the x-axis, grams of solute that can dissolve in 100g of water is on the y-axis. 5 different lines for different solids all go up and to the right. Example: at 30 degrees celsius, 40 grams of potassium nitrate can dissolve, while at 60 degrees, 100 grams can dissolve in the same amount of water.
Using the graph, complete the following statements.
  • In general, as the temperature increases, the solubility of ionic solids in water
    .
  • This means that
    solid is able to dissolve in the same amount of water at higher temperatures.
  • This is because the kinetic energy of the water molecules
    as the temperature increases, making them more effective at disrupting the ionic bonds.