What Is The Effect Of Solubility On Temperature In Class 9 Science?
Science, Grade 9 | Effect Of Temperature And Pressure On Solubility | Lido Learning
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How Does Solubility Change With Temperature Class 9?
In the context of changes in solubility with temperature, it’s important to note that the relationship varies depending on whether you’re dealing with liquids and solids or gases. When it comes to the solubility of liquids and solids, it generally increases as the temperature rises. For instance, consider the example of dissolving salt or sugar in water. These substances dissolve more readily in hot water compared to water at room temperature or cold water.
Conversely, when we focus on the solubility of gases, the trend is the opposite. As temperature increases, the solubility of gases in a liquid generally decreases. To illustrate, if you were to think about carbon dioxide (CO2) dissolving in water, you’d observe that it’s less soluble in hot water and more soluble in cold water.
This dual nature of solubility changes with temperature is a fundamental concept in the study of solutions and has important implications in various scientific and practical applications.
What Is The Effect Of Temperature On Solubility Of Gases Class 9?
Let’s provide a more detailed explanation of the effect of temperature on the solubility of gases, particularly for Class 9 students:
“When we investigate how temperature influences the solubility of gases, we find an interesting trend. As the temperature of a solution increases, the solubility of most gases in that solution decreases. This phenomenon can be attributed to the thermodynamics of the dissolving process. When gases dissolve in a liquid, it often results in an exothermic reaction, meaning it releases heat. This heat is a product of the molecular interactions between the gas molecules and the solvent molecules.
To better understand this, imagine that gas molecules are like guests at a party, and the liquid molecules are the hosts. At lower temperatures, the guests (gas molecules) are more ‘welcomed’ and ‘comfortable’ in the ‘party’ (liquid), so they tend to stay longer and dissolve more readily. However, as the temperature rises, the ‘party’ becomes more energetic, causing the guests to feel less inclined to stay (i.e., they dissolve less) because the increased thermal energy makes them more likely to escape from the liquid into the gas phase.
This fundamental principle has significant implications in various real-world scenarios, including in industrial processes and environmental science, as it helps us understand and control the solubility of gases under different temperature conditions.”
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Solubility of solutes like salt increases with an increase in temperature whereas the solubility of substances like calcium sulphate decreases as temperature increases.With an increase in temperature solubility of liquids and solids increases. In the same way solubility of gases decreases with an increase in temperature. For example, when we mix salt or sugar in water. Both will be more easily soluble in hot water as compared to normal or cold water.For gases, the solubility decreases as the temperature increases. This happens because when most gases dissolve in solution, the process becomes exothermic.
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