Solubility Curves and Their Interpretation

Chemistry ⇒ Solutions and Colloids

Solubility Curves and Their Interpretation starts at 10 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Solubility Curves and Their Interpretation. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 12

A solubility curve for NaNO₃ shows that at 20°C, 88 g can dissolve in 100 g of water. If a solution at 20°C contains 70 g of NaNO₃ per 100 g of water, is it saturated, unsaturated, or supersaturated?

A solubility curve shows that at 60°C, 100 g of water can dissolve 120 g of a certain salt. If a solution at 60°C contains 120 g of the salt, what type of solution is it?

A solution at 25°C contains 36 g of NaCl in 100 g of water. The solubility curve shows 36 g is the maximum at this temperature. What type of solution is this?

A solution at 70°C contains 110 g of KNO₃ per 100 g of water. The solubility curve shows 130 g can dissolve at this temperature. Is the solution saturated, unsaturated, or supersaturated?

A solution contains 80 g of sugar in 100 g of water at 30°C. The solubility curve shows the maximum solubility at this temperature is 90 g. What type of solution is this?

A student adds 60 g of NaCl to 100 g of water at 80°C. According to the solubility curve, only 40 g can dissolve at this temperature. What will happen to the excess NaCl?

At 50°C, the solubility of KCl is 42 g per 100 g of water. If 50 g of KCl is added to 100 g of water at this temperature, how much will remain undissolved?

Define a saturated solution.

Describe how to prepare a supersaturated solution using a solubility curve.

Describe how you would use a solubility curve to determine if a solution is saturated, unsaturated, or supersaturated.

Describe the process of crystallization in terms of solubility and temperature.

Explain what happens when a saturated solution is cooled slowly.

Explain why a solubility curve for NaCl is relatively flat compared to that of KNO₃.

Explain why pressure has a significant effect on the solubility of gases but not solids.

Explain why the solubility of gases decreases with increasing temperature.

If 100 g of water at 40°C can dissolve 50 g of a solute, how much of the solute will remain undissolved if 70 g is added?

If 30 g of a solute dissolves in 100 g of water at 20°C, but only 20 g dissolves at 0°C, what will happen if a saturated solution at 20°C is cooled to 0°C?

If 40 g of KNO₃ can dissolve in 100 g of water at 30°C, what is the solubility of KNO₃ at 30°C?

If a solubility curve for a salt shows a steep increase with temperature, what does this indicate about the salt's solubility?

If the solubility of a salt is 36 g per 100 g of water at 25°C, how much salt will dissolve in 250 g of water at the same temperature?