Solubility Curves - Basic Introduction - Chemistry Problems

TL;DR

This video explains solubility curves and how to use them to determine solubility of different compounds at different temperatures.

Transcript

in this video we're going to answer some questions related to solubility curves on the y-axis we have the solubility and on the x-axis the temperature in celsius on the y-axis is the grams of solute dissolved per 100 milliliters of water now some solubility curve worksheets might have grams of solu per 100 grams of water which is the same thing one... Read More

Key Insights

• ❓ Solubility curves show the relationship between temperature and solubility.
• 🔊 Increasing the volume of water allows for a higher amount of solute to be dissolved.
• ❓ The intersection of two solubility curves can be used to determine when the solubility of two substances is the same.
• 💱 The slope of a solubility curve indicates how much a substance's solubility is affected by temperature changes.
• 🟰 Concentration less than solubility indicates an unsaturated solution, equal to solubility indicates a saturated solution, and greater than solubility indicates a supersaturated solution.
• 🎚️ The difference between solubility and concentration determines the saturation level of a solution.

Questions & Answers

Q: How many grams of KCl can be dissolved in 100 grams of water at 40 degrees Celsius?

At 40 degrees Celsius, the solubility of KCl is 40 grams per 100 grams of water. Therefore, 40 grams of KCl can be dissolved in 100 grams of water.

Q: How does increasing the volume of water affect the solubility of a solute?

Increasing the volume of water allows for a higher amount of solute to be dissolved. For example, if 40 grams of KCl can be dissolved in 100 grams of water, then 100 grams of KCl can be dissolved in 250 grams of water.

Q: Which compound is least soluble at 30 degrees Celsius?

Cerium sulfate is the least soluble compound at 30 degrees Celsius, as it is the lowest point on the solubility curve for that temperature.

Q: Which compound is the most soluble at 30 degrees Celsius?

Potassium nitrate is the most soluble substance at 30 degrees Celsius, as it is the highest point on the solubility curve for that temperature.

Summary & Key Takeaways

• Solubility curves show the relationship between temperature and solubility of different compounds in water.

• The solubility is measured in grams of solute dissolved per 100 milliliters of water.

• Increasing the volume of water increases the amount of solute that can be dissolved.