Electrolytes and Solubility Concepts

The video explains the process of dissolving solutes in solvents, focusing on the interactions between solvent and solute molecules. It highlights how ionic solids like sodium chloride dissolve in polar solvents such as water, forming strong electrolytes that conduct electricity. The video also differentiates between strong and weak electrolytes, using acetic acid as an example of a weak electrolyte. Finally, it discusses nonelectrolytes, like sugar, which dissolve without forming ions.

What is the key factor that promotes the dissolving of a solute in a solvent?

• Strong solute-solute interactions

• Weak solvent-solute interactions

• Strong solvent-solvent interactions

• Strong solvent-solute interactions

Why is water effective at dissolving ionic compounds like sodium chloride?

• Water has partial positive and negative charges

• Water is a non-polar solvent

• Water forms covalent bonds with ions

• Water molecules are larger than sodium chloride ions

What happens to ionic compounds when they dissolve in water?

• They dissociate into cations and anions

• They evaporate into the air

• They remain intact as solid crystals

• They form covalent bonds with water

How do strong electrolytes conduct electricity in solution?

• By remaining as neutral molecules

• By evaporating into gas

• By producing many ions

• By forming covalent bonds

What is a characteristic of strong acids in solution?

• They do not conduct electricity

• They partially ionize

• They form solid precipitates

• They completely dissociate into ions

What percentage of molecules typically ionize in a weak acid solution?

• Exactly 100%

• Less than 5%

• About 50%

• More than 95%

Which of the following is an example of a weak electrolyte?

• Glucose

• Sulfuric acid

• Sodium chloride

• Acetic acid

What happens to sugar molecules when they dissolve in water?

• They remain intact

• They form a precipitate

• They ionize completely

• They evaporate

Why can't nonelectrolytes conduct electricity in solution?

• They do not form ions

• They form ions in solution

• They evaporate quickly

• They do not dissolve in water