Strontium Hydroxide Solubility Concepts

The video explores the solubility of strontium hydroxide (Sr(OH)2) in water, concluding that it is slightly soluble. It explains that most hydroxide salts are slightly soluble, with some exceptions, but strontium is not one of them. Despite its limited solubility, strontium hydroxide is a strong base because the dissolved portion dissociates completely into strontium and hydroxide ions. The video emphasizes the importance of understanding solubility rules and the behavior of strong bases.

What is the solubility status of strontium hydroxide in water?

• Insoluble

• Slightly soluble

• Completely insoluble

• Highly soluble

According to solubility rules, which of the following is true about hydroxide salts?

• All hydroxide salts are insoluble.

• Most hydroxide salts are highly soluble.

• Most hydroxide salts are slightly soluble.

• All hydroxide salts are exceptions.

Which of the following is NOT an exception to the solubility of hydroxide salts?

• Strontium hydroxide

• Magnesium hydroxide

• Calcium hydroxide

• Barium hydroxide

What characteristic makes strontium hydroxide a strong base?

• It does not dissolve in water.

• It is highly soluble in water.

• It is an exception to solubility rules.

• It completely dissociates into ions in solution.

When strontium hydroxide dissolves in water, what ions are formed?

• Sr+ and O2-

• Sr2+ and OH-

• Sr+ and OH2-

• Sr2+ and H+

Why is strontium hydroxide considered a strong base despite its low solubility?

• It forms a precipitate in water.

• It reacts with acids to form salts.

• It is an exception to the solubility rules.

• The dissolved portion dissociates completely into ions.

What happens to the dissolved part of strontium hydroxide in water?

• It evaporates.

• It forms a complex ion.

• It remains as a solid.

• It splits into strontium and hydroxide ions.

What is the final conclusion about strontium hydroxide's solubility in water?

• It is highly soluble.

• It is completely insoluble.

• It is moderately soluble.

• It is slightly soluble.