Acetic Acid and Magnesium Hydroxide Reactions

This video tutorial explains how to write the net ionic equation for the reaction between acetic acid (CH3COOH) and magnesium hydroxide (Mg(OH)2). It covers balancing the molecular equation, determining the states of substances, and splitting strong electrolytes into ions. The tutorial also discusses the complete and net ionic equations, highlighting the differences between reactants and products. Key points include the weak electrolyte nature of acetic acid and the insolubility of magnesium hydroxide.

What is the balanced molecular equation for the reaction between acetic acid and magnesium hydroxide?

• CH3COOH + Mg(OH)2 → CH3COOMg + H2O

• 2CH3COOH + Mg(OH)2 → (CH3COO)2Mg + 2H2O

• CH3COOH + MgOH2 → CH3COOMg + H2O

• 2CH3COOH + MgOH2 → (CH3COO)2Mg + H2O

Which of the following statements about acetic acid is true?

• It is a strong acid and dissociates completely in water.

• It is a weak acid and does not dissociate completely in water.

• It is insoluble in water.

• It is a strong electrolyte.

What is the state of magnesium hydroxide in the reaction?

• Liquid

• Solid

• Gas

• Aqueous

Why is acetic acid not split into ions in the net ionic equation?

• Because it is a gas.

• Because it is insoluble.

• Because it is a weak electrolyte.

• Because it is a strong acid.

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

• 2-

• 2+

• 1+

• 1-

How many acetate ions are needed to balance the charge of one magnesium ion?

• Three

• Four

• Two

• One

What is the complete ionic equation for the reaction?

• 2CH3COOH(aq) + Mg(OH)2(s) → Mg2+(aq) + CH3COO-(aq) + H2O(l)

• 2CH3COOH(aq) + Mg(OH)2(s) → (CH3COO)2Mg(aq) + 2H2O(l)

• CH3COOH(aq) + Mg(OH)2(s) → Mg2+(aq) + CH3COO-(aq) + H2O(l)

• 2CH3COOH(aq) + Mg(OH)2(s) → Mg2+(aq) + 2CH3COO-(aq) + 2H2O(l)

What is the net ionic equation for the reaction?

• 2CH3COOH(aq) + Mg(OH)2(s) → (CH3COO)2Mg(aq) + 2H2O(l)

• 2CH3COOH(aq) + Mg(OH)2(s) → Mg2+(aq) + 2CH3COO-(aq) + 2H2O(l)

• CH3COOH(aq) + Mg(OH)2(s) → Mg2+(aq) + CH3COO-(aq) + H2O(l)

• 2CH3COOH(aq) + Mg(OH)2(s) → Mg2+(aq) + CH3COO-(aq) + H2O(l)

Why is the net ionic equation the same as the complete ionic equation in this reaction?

• Because magnesium hydroxide is a gas.

• Because all reactants and products are the same.

• Because acetic acid is a strong acid.

• Because there are no spectator ions.

What is the state of water in the net ionic equation?

• Gas

• Liquid

• Aqueous

• Solid