What are Salts?
Salts are ionic compounds formed by the reaction of an acid and a base. They generally consist of a positively charged cation and a negatively charged anion.
H₂SO₄ (Sulfuric Acid) Reactions
H₂SO₄ is a strong acid. It will react with bases to form salts and water. Let's analyze each compound you listed:
1. NaCl (Sodium Chloride): This is already a salt! It's formed by the reaction of a strong acid (HCl) and a strong base (NaOH). It won't react further with H₂SO₄ to form another salt.
2. CaOH₂ (Calcium Hydroxide): This is a strong base. It will react with H₂SO₄ to form CaSO₄ (Calcium Sulfate), a salt, and water:
CaOH₂ + H₂SO₄ → CaSO₄ + 2H₂O
3. HF (Hydrogen Fluoride): This is a weak acid. While it can react with bases, it doesn't typically react with H₂SO₄ to form a salt.
4. AlCl₃ (Aluminum Chloride): This is already a salt! It's formed by the reaction of a strong acid (HCl) and a weak base (Al(OH)₃). It won't react further with H₂SO₄ to form another salt.
5. H₂O (Water): Water is a neutral compound. It won't react with H₂SO₄ to form a salt.
6. MgOH₂ (Magnesium Hydroxide): This is a weak base. It will react with H₂SO₄ to form MgSO₄ (Magnesium Sulfate), a salt, and water:
MgOH₂ + H₂SO₄ → MgSO₄ + 2H₂O
In Summary
* Only CaOH₂ and MgOH₂ will react with H₂SO₄ to form salts (CaSO₄ and MgSO₄, respectively).
* The other compounds you listed are already salts or don't react with H₂SO₄ to form salts.
