Solubility Rules and Ionic Compounds

This video tutorial explains how to use solubility rules for ionic compounds. It covers the steps to determine solubility, focusing on the cation and anion in a compound. Key ions and rules are highlighted, along with examples to illustrate the application of these rules. The video concludes with notes on the states of compounds and common misconceptions about solubility.

What is the primary purpose of having a list of solubility rules?

• To replace the need for a chemistry textbook

• To memorize all ionic compounds

• To identify all exceptions in ionic compounds

• To apply them in determining solubility

Which ions are always soluble according to the first rule?

• Alkaline earth metals

• Transition metals

• Alkali metals and ammonium

• Halogens

What should you check if the cation is not an alkali metal or ammonium?

• The temperature of the solution

• The color of the compound

• The anion in the compound

• The pH level of the solution

Which ion is associated with rule number two?

• Carbonate

• Chlorate

• Sulfate

• Chloride

What is the solubility status of Na2SO4 based on the rules?

• Depends on temperature

• Partially soluble

• Soluble

• Insoluble

Why is HgSO4 considered insoluble?

• It is an exception to the sulfate rule

• It reacts with water

• It is a compound of a noble gas

• It contains a transition metal

What does a subscripted 's' indicate in the formula of an ionic compound?

• The compound is soluble

• The compound is a solid

• The compound is aqueous

• The compound is gaseous

What happens to table salt when it is dissolved in water?

• It becomes insoluble

• It forms a gaseous solution

• It remains a solid

• It forms an aqueous solution

Why do limestone buildings not dissolve in rainwater?

• They are made of soluble compounds

• Rainwater is not a solvent

• Calcium carbonate is insoluble in water

• They are protected by a chemical coating

What does a subscripted 'aq' signify in a chemical formula?

• The compound is a solid

• The compound is insoluble

• The compound is aqueous

• The compound is gaseous