Electrolytes and Hydroxide Ions

The video explores whether magnesium hydroxide (Mg2) is an electrolyte or non-electrolyte. It explains that Mg2 is a weak electrolyte because it is mostly insoluble in water, producing very few ions, which results in weak electrical conductivity. The video also emphasizes the importance of memorizing common strong acids and bases for chemistry studies.

What is the primary characteristic of an electrolyte?

• It is insoluble in water.

• It cannot conduct electricity.

• It is always a strong acid.

• It dissolves in water and produces ions.

Why is magnesium hydroxide considered a weak electrolyte?

• It completely dissolves in water.

• It is mostly insoluble, producing few ions.

• It is a strong base.

• It produces a large number of ions.

What is the role of a solubility table in determining electrolyte strength?

• It indicates the solubility and potential ion production.

• It provides the molecular weight of the compound.

• It shows the color of the compound.

• It lists the pH of the solution.

What ions are formed when magnesium hydroxide dissolves in water?

• Mg2+ and OH-

• Mg2+ and H+

• Mg+ and O2-

• Mg+ and OH2-

How does the solubility of magnesium hydroxide affect its conductivity?

• It conducts electricity only in solid form.

• It does not conduct electricity at all.

• It conducts electricity strongly.

• It weakly conducts electricity due to few ions.

What is the charge of the hydroxide ion in magnesium hydroxide?

• 1+

• 1-

• 2+

• 2-

Which group does magnesium belong to on the periodic table?

• Group 2

• Group 1

• Group 4

• Group 3

What is the chemical formula for the hydroxide ion?

• OH2-

• O2-

• OH-

• H2O

Why is magnesium hydroxide not considered a strong base?

• It produces a large number of ions.

• It completely dissociates in water.

• It is not listed among common strong bases.

• It is highly soluble.

What is the significance of memorizing common strong acids and bases?

• They are not important for understanding solubility.

• They help in identifying weak electrolytes.

• They are only used in advanced chemistry.

• They are rarely used in chemistry.