Weak Electrolytes and Their Properties

The video tutorial explains the classification of water-soluble compounds into electrolytes and non-electrolytes. Electrolytes are further divided into strong and weak electrolytes based on their ionization in aqueous solutions. Strong electrolytes ionize completely, while weak electrolytes only partially dissociate, establishing an equilibrium. The tutorial also covers how to calculate ion concentrations in solutions using examples like Na2SO4.

What is the primary difference between electrolytes and non-electrolytes in aqueous solutions?

• Electrolytes are organic compounds, non-electrolytes are inorganic.

• Electrolytes are always acidic, non-electrolytes are basic.

• Electrolytes are always solid, non-electrolytes are liquid.

• Electrolytes conduct electricity, non-electrolytes do not.

Which of the following is a characteristic of strong electrolytes?

• They partially ionize in water.

• They do not conduct electricity.

• They completely ionize in water.

• They are always gases.

What type of arrow is used in the dissociation equation of strong electrolytes?

• Single arrow

• Double arrow

• No arrow

• Curved arrow

If the concentration of Na2SO4 is 0.01 moles, what is the concentration of Na+ ions?

• 0.01 moles

• 0.02 moles

• 0.005 moles

• 0.1 moles

In the dissociation of Na2SO4, what is the concentration of SO4 2- ions if the solution is 0.01 moles?

• 0.01 moles

• 0.02 moles

• 0.1 moles

• 0.005 moles

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

• Strong acids

• Strong bases

• Weak acids

• Soluble salts

What happens to weak electrolytes in dilute aqueous solutions?

• They completely ionize.

• They do not ionize at all.

• They partially dissociate.

• They evaporate.

What is established between ions and non-ionized molecules in weak electrolytes?

• A solid precipitate

• A chemical reaction

• A gas formation

• An equilibrium

How is the ionization of weak electrolytes represented?

• With a single arrow

• With a double arrow

• With a curved arrow

• With no arrow

Which of the following best describes the behavior of weak bases in water?

• They form a solid.

• They partially dissociate.

• They do not ionize at all.

• They completely ionize.