Free Printable Acids Bases and Salts Worksheets - Free Printable

Problem Analysis:

The task involves classifying chemical compounds as acids, bases, or salts based on the Arrhenius definition. Additionally, for acids and bases, we need to determine whether they are strong or weak, and for salts, we need to classify them as acidic, basic, or neutral.

#### Arrhenius Definition Recap:
- Acid: A substance that dissociates in water to produce H⁺ (hydrogen ions).
- Base: A substance that dissociates in water to produce OH⁻ (hydroxide ions).
- Salt: An ionic compound formed by the reaction of an acid and a base, which does not produce H⁺ or OH⁻ when dissolved in water.

#### Strong vs. Weak Acids/Bases:
- Strong Acids/Bases: Completely dissociate in water.
- Weak Acids/Bases: Partially dissociate in water.

#### Acidic, Basic, or Neutral Salts:
- Acidic Salt: Formed from a strong acid and a weak base.
- Basic Salt: Formed from a strong base and a weak acid.
- Neutral Salt: Formed from a strong acid and a strong base.

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Solution:

#### Part 1: Classify as Acid, Base, or Salt

1. HBr: Acid (Hydrobromic acid)
2. Mg(OH)₂: Base (Magnesium hydroxide)
3. HCl: Acid (Hydrochloric acid)
4. KNO₂: Salt (Potassium nitrite)
5. HI: Acid (Hydroiodic acid)
6. Ba(OH)₂: Base (Barium hydroxide)
7. KCl: Salt (Potassium chloride)
8. H₃PO₄: Acid (Phosphoric acid)
9. HClO: Acid (Hypochlorous acid)
10. Al(OH)₃: Base (Aluminum hydroxide)
11. KC₂H₃O₂: Salt (Potassium acetate)
12. NaCl: Salt (Sodium chloride)

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#### Part 2: Classify as Acid, Base, or Salt; Indicate Strength/Type

1. HNO₃:
- Classification: Acid
- Strength: Strong (Nitric acid is a strong acid.)

2. NaOH:
- Classification: Base
- Strength: Strong (Sodium hydroxide is a strong base.)

3. NaNO₃:
- Classification: Salt
- Type: Neutral (Formed from NaOH [strong base] and HNO₃ [strong acid].)

4. KOH:
- Classification: Base
- Strength: Strong (Potassium hydroxide is a strong base.)

5. H₂S:
- Classification: Acid
- Strength: Weak (Hydrogen sulfide is a weak acid.)

6. Al(NO₃)₃:
- Classification: Salt
- Type: Acidic (Formed from Al(OH)₃ [weak base] and HNO₃ [strong acid].)

7. H₂SO₄:
- Classification: Acid
- Strength: Strong (Sulfuric acid is a strong acid.)

8. CaCl₂:
- Classification: Salt
- Type: Neutral (Formed from Ca(OH)₂ [strong base] and HCl [strong acid].)

9. H₃PO₄:
- Classification: Acid
- Strength: Weak (Phosphoric acid is a weak acid.)

10. H₂CO₃:
- Classification: Acid
- Strength: Weak (Carbonic acid is a weak acid.)

11. NH₄OH:
- Classification: Base
- Strength: Weak (Ammonia solution is a weak base.)

12. NH₄Cl:
- Classification: Salt
- Type: Acidic (Formed from NH₄OH [weak base] and HCl [strong acid].)

13. FeBr₃:
- Classification: Salt
- Type: Acidic (Formed from Fe(OH)₃ [weak base] and HBr [strong acid].)

14. HF:
- Classification: Acid
- Strength: Weak (Hydrofluoric acid is a weak acid.)

15. H₂Se:
- Classification: Acid
- Strength: Weak (Hydrogen selenide is a weak acid.)

16. HMnO₄:
- Classification: Acid
- Strength: Strong (Permanaganic acid is a strong acid.)

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Final Answer:

#### Part 1:
1. Acid
2. Base
3. Acid
4. Salt
5. Acid
6. Base
7. Salt
8. Acid
9. Acid
10. Base
11. Salt
12. Salt

#### Part 2:
1. Acid (Strong)
2. Base (Strong)
3. Salt (Neutral)
4. Base (Strong)
5. Acid (Weak)
6. Salt (Acidic)
7. Acid (Strong)
8. Salt (Neutral)
9. Acid (Weak)
10. Acid (Weak)
11. Base (Weak)
12. Salt (Acidic)
13. Salt (Acidic)
14. Acid (Weak)
15. Acid (Weak)
16. Acid (Strong)

Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
\text{Part 1:} & \text{1. Acid, 2. Base, 3. Acid, 4. Salt, 5. Acid, 6. Base, 7. Salt, 8. Acid, 9. Acid, 10. Base, 11. Salt, 12. Salt} \\
\text{Part 2:} & \text{1. Acid (Strong), 2. Base (Strong), 3. Salt (Neutral), 4. Base (Strong), 5. Acid (Weak), 6. Salt (Acidic), 7. Acid (Strong), 8. Salt (Neutral), 9. Acid (Weak), 10. Acid (Weak), 11. Base (Weak), 12. Salt (Acidic), 13. Salt (Acidic), 14. Acid (Weak), 15. Acid (Weak), 16. Acid (Strong)}
\end{array}
}
\]