Strong or Weak Acid/Base Identifier Online Tool
Acid-Base Identifier
Enter a chemical name or formula to classify it as a strong/weak acid or base.
Instructions for Use
To identify a substance, simply type its common name or chemical formula into the input box above and click "Analyze". The tool will instantly classify it for you.
- For Names: Type the full English name, e.g., "Sulfuric Acid".
- For Formulas: Type the chemical formula, e.g., "H2SO4" or "H₂SO₄". The tool is smart enough to handle numbers and subscripts.
Understanding Acids and Bases
In chemistry, the strength of an acid or a base is determined by its ability to ionize or dissociate in water.
- Strong Acids/Bases: These substances completely dissociate into their ions in an aqueous solution. This means that nearly 100% of the molecules break apart to release H⁺ ions (for acids) or OH⁻ ions (for bases). This high concentration of ions makes them highly reactive and corrosive.
- Weak Acids/Bases: These substances only partially dissociate in water. An equilibrium is established between the undissociated molecule and its ions. Because only a small fraction of molecules break apart, their solutions are less reactive than those of strong acids and bases.
Reference Tables
Below are the lists of common acids and bases used by this identifier tool.
Strong Acids
| Name | Formula |
|---|---|
| Hydrochloric Acid | HCl |
| Sulfuric Acid | H₂SO₄ |
| Nitric Acid | HNO₃ |
| Hydrobromic Acid | HBr |
| Hydroiodic Acid | HI |
| Perchloric Acid | HClO₄ |
| Chloric Acid | HClO₃ |
Strong Bases
| Name | Formula |
|---|---|
| Sodium Hydroxide | NaOH |
| Potassium Hydroxide | KOH |
| Calcium Hydroxide | Ca(OH)₂ |
| Lithium Hydroxide | LiOH |
| Strontium Hydroxide | Sr(OH)₂ |
| Barium Hydroxide | Ba(OH)₂ |
Weak Acids
| Name | Formula |
|---|---|
| Acetic Acid | CH₃COOH |
| Phosphoric Acid | H₃PO₄ |
| Hydrofluoric Acid | HF |
| Carbonic Acid | H₂CO₃ |
| Citric Acid | C₆H₈O₇ |
Weak Bases
| Name | Formula |
|---|---|
| Ammonia | NH₃ |
| Aniline | C₆H₅NH₂ |
| Sodium Bicarbonate | NaHCO₃ |
| Magnesium Hydroxide | Mg(OH)₂ |
| Pyridine | C₅H₅N |
Why This Tool is an Essential Resource
Quickly and accurately identifying whether a chemical is a strong or weak acid or base is a fundamental skill in chemistry. This online "Strong or Weak Acid/Base Identifier" serves as an invaluable resource for students, educators, and professionals. By providing instant classification, detailed descriptions, and a user-friendly interface, it simplifies chemical analysis, aids in homework and lab preparation, and enhances overall understanding of chemical properties. The comprehensive database and smart search functionality ensure you get reliable results every time, making this page a top destination for anyone searching for chemical classification tools.