Acid Base Worksheet | PDF - Free Printable

Let's solve each part of the Acids and Bases Worksheet step by step.

---

1. Complete the Chart: Properties of Acids and Bases

We'll fill in the chart based on general chemical properties.

| Property | Acids | Bases |
|----------------------------------|------------------------------------------------|-------------------------------------------------|
| Conductivity in Aqueous Solution | Conduct electricity (due to H⁺ ions) | Conduct electricity (due to OH⁻ or other ions) |
| Taste | Sour | Bitter |
| Feel | None (but can be corrosive) | Slippery or soapy |
| Reaction with Metal | Reacts to produce hydrogen gas (H₂) | No reaction (usually) |
| Reaction with Carbonate | Produces CO₂ gas | No reaction (or may react if acidic) |
| Colour on Litmus Paper | Turns blue litmus paper red | Turns red litmus paper blue |
| Colour with Universal Indicator | Red/orange/yellow (low pH) | Blue/green/purple (high pH) |
| Colour with phenolphthalein | Colorless | Pink |

> ✔ Note: Both acids and bases conduct electricity in aqueous solution because they dissociate into ions.

---

2. Identify Each Compound as Acid or Base and Name It

| Compound | Acid/Base? | Name |
|-----------------|------------|-------------------------------|
| HNO₃ | Acid | Nitric acid |
| Mg(OH)₂ | Base | Magnesium hydroxide |
| H₃PO₄ | Acid | Phosphoric acid |
| H₂CO₃ | Acid | Carbonic acid |
| HF | Acid | Hydrofluoric acid |
| Fe(OH)₃ | Base | Iron(III) hydroxide |

> 🔍 Explanation:
> - Acids: Start with H and release H⁺ ions in water.
> - Bases: Contain OH⁻ groups (especially metal hydroxides).

---

3. Write the Formula for Each Acid/Base

| Name | Formula |
|-----------------------|----------------|
| Hydrochloric acid | HCl |
| Aluminum hydroxide | Al(OH)₃ |
| Lithium hydroxide | LiOH |
| Sulfuric acid | H₂SO₄ |
| Hydrochloric acid | HCl |
| Sodium hydroxide | NaOH |
| Calcium hydroxide | Ca(OH)₂ |
| Sulfurous acid | H₂SO₃ |

> 📌 Notes:
> - Hydrochloric acid: HCl (strong acid)
> - Sulfuric acid: H₂SO₄ (strong acid)
> - Sulfurous acid: H₂SO₃ (weak acid, from SO₂ + H₂O)
> - Aluminum hydroxide: Al(OH)₃ (insoluble base)
> - Lithium hydroxide: LiOH (soluble strong base)
> - Sodium hydroxide: NaOH (strong base)
> - Calcium hydroxide: Ca(OH)₂ (slightly soluble base)

---

✔ Final Answer Summary:

#### 1. Chart Completed:

| Property | Acids | Bases |
|---------------------------------|------------------------------------------|--------------------------------------------|
| Conductivity in Aqueous Soln. | Yes (conducts) | Yes (conducts) |
| Taste | Sour | Bitter |
| Feel | None (corrosive) | Slippery/soapy |
| Reaction with Metal | Produces H₂ gas | No reaction |
| Reaction with Carbonate | Produces CO₂ gas | No reaction |
| Colour on Litmus Paper | Red | Blue |
| Colour with Universal Indicator | Red/orange/yellow (pH < 7) | Blue/green/purple (pH > 7) |
| Colour with phenolphthalein | Colorless | Pink |

#### 2. Identification Table:

| Compound | Acid/Base? | Name |
|-----------------|------------|------------------------|
| HNO₃ | Acid | Nitric acid |
| Mg(OH)₂ | Base | Magnesium hydroxide |
| H₃PO₄ | Acid | Phosphoric acid |
| H₂CO₃ | Acid | Carbonic acid |
| HF | Acid | Hydrofluoric acid |
| Fe(OH)₃ | Base | Iron(III) hydroxide |

#### 3. Formulas:

| Name | Formula |
|-----------------------|----------------|
| Hydrochloric acid | HCl |
| Aluminum hydroxide | Al(OH)₃ |
| Lithium hydroxide | LiOH |
| Sulfuric acid | H₂SO₄ |
| Hydrochloric acid | HCl |
| Sodium hydroxide | NaOH |
| Calcium hydroxide | Ca(OH)₂ |
| Sulfurous acid | H₂SO₃ |

---

✔ This completes the worksheet! Let me know if you'd like a printable version or further explanations.