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Factors that Affect Solubility Video Lecture - Chemistry Class 12 - NEET

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FAQs on Factors that Affect Solubility Video Lecture - Chemistry Class 12 - NEET

1. What is solubility and how does it affect the dissolving process?
Solubility is the ability of a substance to dissolve in a solvent and form a homogeneous solution. It is usually expressed in terms of grams of solute that can dissolve in a given amount of solvent at a specific temperature. The solubility of a substance can greatly affect the rate and extent of the dissolving process. Higher solubility means more solute can dissolve in the solvent, leading to a faster and more complete dissolution.
2. How does temperature affect the solubility of a substance?
Temperature has a significant impact on the solubility of a substance. In general, the solubility of most solid solutes in a liquid solvent increases with an increase in temperature. This is because higher temperature provides more kinetic energy to the particles, allowing them to move faster and collide more frequently with each other. As a result, more solute particles break away from the solid and dissolve in the solvent. However, the solubility of some substances, such as gases in liquids, decreases with increasing temperature.
3. What role does pressure play in the solubility of gases in liquids?
Pressure plays a crucial role in the solubility of gases in liquids. According to Henry's law, the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. This means that as the pressure of the gas increases, more gas molecules will be forced into the liquid, increasing its solubility. Conversely, decreasing the pressure will cause the gas to come out of the solution, leading to a decrease in solubility.
4. How does the nature of solute and solvent affect solubility?
The nature of both the solute and solvent can significantly influence solubility. Polar solutes tend to dissolve best in polar solvents, while nonpolar solutes dissolve better in nonpolar solvents. This is because like dissolves like, meaning substances with similar intermolecular forces are more likely to dissolve in each other. Additionally, the size and shape of the solute and solvent molecules can also impact solubility. Smaller molecules with similar sizes are generally more soluble in each other compared to larger molecules.
5. How does the presence of other solutes affect the solubility of a substance?
The presence of other solutes can have both positive and negative effects on the solubility of a substance. When two solutes have similar properties and are soluble in the same solvent, they can enhance each other's solubility through a process called co-solvency. However, if the solutes have different properties or are not compatible with each other, they may compete for the solvent molecules and reduce the overall solubility. This phenomenon is known as salting out or salting in, depending on whether the solubility decreases or increases, respectively.
150 videos|377 docs|213 tests
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