Solubility and Precipitation Problems

The video tutorial explores the relationship between solubility and temperature for various compounds. It covers how to determine the temperature at which KO3 precipitates, the amount of N3 that precipitates upon cooling, and the water required to dissolve cerium sulfate. It also discusses the saturation of KCL3 and the dissolution of ammonium chloride, using solubility curves and mathematical ratios to solve these problems.

At what temperature does 100 grams of water stop dissolving 45 grams of KO3?

• 15°C

• 30°C

• 45°C

• 60°C

How much N3 will precipitate out when a saturated solution at 60°C is cooled to 20°C?

• 87 grams

• 125 grams

• 50 grams

• 38 grams

What is the solubility of N3 in 100 grams of water at 20°C?

• 125 grams

• 87 grams

• 38 grams

• 60 grams

How much water is needed to dissolve 17.3 grams of cerium sulfate at 50°C?

• 500 grams

• 346 grams

• 200 grams

• 100 grams

What is the solubility of cerium sulfate in 100 grams of water at 50°C?

• 15 grams

• 20 grams

• 5 grams

• 10 grams

How many grams of KCl3 are needed to saturate 85 grams of water at 36°C?

• 14 grams

• 10 grams

• 11.9 grams

• 12.5 grams

What is the solubility of KCl3 in 100 grams of water at 36°C?

• 10 grams

• 14 grams

• 11.9 grams

• 12.5 grams

How much ammonium chloride dissolves in 100 grams of water at 40°C?

• 19 grams

• 65 grams

• 46 grams

• 50 grams

How much more water is needed to dissolve an additional 19 grams of ammonium chloride at 40°C?

• 70 grams

• 41.3 grams

• 60 grams

• 50 grams

If 65 grams of ammonium chloride is attempted to be dissolved in 100 grams of water at 40°C, how much actually dissolves?

• 19 grams

• 46 grams

• 65 grams

• 50 grams