Chemistry worksheet focused on neutralization reactions, guiding students to predict salt formulas, balance equations, and name reactants and products.

Neutralization Reactions Worksheet Solution

Neutralization reactions occur when an acid reacts with a base to form a salt and water. The general equation for a neutralization reaction is:

\[
\text{Acid} + \text{Base} \rightarrow \text{Salt} + \text{Water}
\]

We need to predict the formula of the salt formed, balance each equation, and name the acid, base, and salt in each reaction.

---

#### 1. HCl + NaOH → NaCl + H₂O
- Acid: Hydrochloric acid (HCl)
- Base: Sodium hydroxide (NaOH)
- Salt: Sodium chloride (NaCl)
- Water: H₂O
- Balanced Equation: Already balanced.

---

#### 2. H₂SO₄ + Ca(OH)₂ → ? + H₂O
- Acid: Sulfuric acid (H₂SO₄)
- Base: Calcium hydroxide (Ca(OH)₂)
- Salt: Calcium sulfate (CaSO₄)
- Water: H₂O
- Balanced Equation:
- Sulfuric acid has 2 H⁺ ions, and calcium hydroxide has 2 OH⁻ ions.
- Balance by ensuring equal numbers of H⁺ and OH⁻:
\[
\text{H}_2\text{SO}_4 + \text{Ca(OH)}_2 \rightarrow \text{CaSO}_4 + 2\text{H}_2\text{O}
\]

---

#### 3. HNO₃ + KOH → ? + H₂O
- Acid: Nitric acid (HNO₃)
- Base: Potassium hydroxide (KOH)
- Salt: Potassium nitrate (KNO₃)
- Water: H₂O
- Balanced Equation:
- Nitric acid has 1 H⁺ ion, and potassium hydroxide has 1 OH⁻ ion.
- Balance by ensuring equal numbers of H⁺ and OH⁻:
\[
\text{HNO}_3 + \text{KOH} \rightarrow \text{KNO}_3 + \text{H}_2\text{O}
\]

---

#### 4. H₂CO₃ + NaOH → ? + H₂O
- Acid: Carbonic acid (H₂CO₃)
- Base: Sodium hydroxide (NaOH)
- Salt: Sodium carbonate (Na₂CO₃)
- Water: H₂O
- Balanced Equation:
- Carbonic acid has 2 H⁺ ions, and sodium hydroxide has 1 OH⁻ ion.
- Balance by using 2 molecules of NaOH:
\[
\text{H}_2\text{CO}_3 + 2\text{NaOH} \rightarrow \text{Na}_2\text{CO}_3 + 2\text{H}_2\text{O}
\]

---

#### 5. H₃PO₄ + Ca(OH)₂ → ? + H₂O
- Acid: Phosphoric acid (H₃PO₄)
- Base: Calcium hydroxide (Ca(OH)₂)
- Salt: Calcium phosphate (Ca₃(PO₄)₂)
- Water: H₂O
- Balanced Equation:
- Phosphoric acid has 3 H⁺ ions, and calcium hydroxide has 2 OH⁻ ions.
- Balance by using 3 molecules of Ca(OH)₂ and 2 molecules of H₃PO₄:
\[
2\text{H}_3\text{PO}_4 + 3\text{Ca(OH)}_2 \rightarrow \text{Ca}_3(\text{PO}_4)_2 + 6\text{H}_2\text{O}
\]

---

#### 6. HC₂H₃O₂ + KOH → ? + H₂O
- Acid: Acetic acid (HC₂H₃O₂)
- Base: Potassium hydroxide (KOH)
- Salt: Potassium acetate (KC₂H₃O₂)
- Water: H₂O
- Balanced Equation:
- Acetic acid has 1 H⁺ ion, and potassium hydroxide has 1 OH⁻ ion.
- Balance by ensuring equal numbers of H⁺ and OH⁻:
\[
\text{HC}_2\text{H}_3\text{O}_2 + \text{KOH} \rightarrow \text{KC}_2\text{H}_3\text{O}_2 + \text{H}_2\text{O}
\]

---

#### 7. HCl + NH₄OH → ? + H₂O
- Acid: Hydrochloric acid (HCl)
- Base: Ammonium hydroxide (NH₄OH)
- Salt: Ammonium chloride (NH₄Cl)
- Water: H₂O
- Balanced Equation:
- Hydrochloric acid has 1 H⁺ ion, and ammonium hydroxide has 1 OH⁻ ion.
- Balance by ensuring equal numbers of H⁺ and OH⁻:
\[
\text{HCl} + \text{NH}_4\text{OH} \rightarrow \text{NH}_4\text{Cl} + \text{H}_2\text{O}
\]

---

#### 8. H₂SO₄ + Mg(OH)₂ → ? + H₂O
- Acid: Sulfuric acid (H₂SO₄)
- Base: Magnesium hydroxide (Mg(OH)₂)
- Salt: Magnesium sulfate (MgSO₄)
- Water: H₂O
- Balanced Equation:
- Sulfuric acid has 2 H⁺ ions, and magnesium hydroxide has 2 OH⁻ ions.
- Balance by ensuring equal numbers of H⁺ and OH⁻:
\[
\text{H}_2\text{SO}_4 + \text{Mg(OH)}_2 \rightarrow \text{MgSO}_4 + 2\text{H}_2\text{O}
\]

---

#### 9. HNO₃ + NH₄OH → ? + H₂O
- Acid: Nitric acid (HNO₃)
- Base: Ammonium hydroxide (NH₄OH)
- Salt: Ammonium nitrate (NH₄NO₃)
- Water: H₂O
- Balanced Equation:
- Nitric acid has 1 H⁺ ion, and ammonium hydroxide has 1 OH⁻ ion.
- Balance by ensuring equal numbers of H⁺ and OH⁻:
\[
\text{HNO}_3 + \text{NH}_4\text{OH} \rightarrow \text{NH}_4\text{NO}_3 + \text{H}_2\text{O}
\]

---

#### 10. HNO₃ + Al(OH)₃ → ? + H₂O
- Acid: Nitric acid (HNO₃)
- Base: Aluminum hydroxide (Al(OH)₃)
- Salt: Aluminum nitrate (Al(NO₃)₃)
- Water: H₂O
- Balanced Equation:
- Nitric acid has 1 H⁺ ion, and aluminum hydroxide has 3 OH⁻ ions.
- Balance by using 3 molecules of HNO₃:
\[
3\text{HNO}_3 + \text{Al(OH)}_3 \rightarrow \text{Al(NO}_3)_3 + 3\text{H}_2\text{O}
\]

---

Final Answer:

\[
\boxed{
\begin{array}{l}
1. \text{HCl} + \text{NaOH} \rightarrow \text{NaCl} + \text{H}_2\text{O} \\
2. \text{H}_2\text{SO}_4 + \text{Ca(OH)}_2 \rightarrow \text{CaSO}_4 + 2\text{H}_2\text{O} \\
3. \text{HNO}_3 + \text{KOH} \rightarrow \text{KNO}_3 + \text{H}_2\text{O} \\
4. \text{H}_2\text{CO}_3 + 2\text{NaOH} \rightarrow \text{Na}_2\text{CO}_3 + 2\text{H}_2\text{O} \\
5. 2\text{H}_3\text{PO}_4 + 3\text{Ca(OH)}_2 \rightarrow \text{Ca}_3(\text{PO}_4)_2 + 6\text{H}_2\text{O} \\
6. \text{HC}_2\text{H}_3\text{O}_2 + \text{KOH} \rightarrow \text{KC}_2\text{H}_3\text{O}_2 + \text{H}_2\text{O} \\
7. \text{HCl} + \text{NH}_4\text{OH} \rightarrow \text{NH}_4\text{Cl} + \text{H}_2\text{O} \\
8. \text{H}_2\text{SO}_4 + \text{Mg(OH)}_2 \rightarrow \text{MgSO}_4 + 2\text{H}_2\text{O} \\
9. \text{HNO}_3 + \text{NH}_4\text{OH} \rightarrow \text{NH}_4\text{NO}_3 + \text{H}_2\text{O} \\
10. 3\text{HNO}_3 + \text{Al(OH)}_3 \rightarrow \text{Al(NO}_3)_3 + 3\text{H}_2\text{O}
\end{array}
}
\]