pH definition (pH = -log10[H+])
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pH = -log10[H+]
What each symbol means
| Symbol | What it stands for |
|---|---|
| pH | Logarithmic acidity scale |
| [H+] | Hydronium/hydrogen ion activity (often molarity for JEE) |
When to use this
Aqueous solution; log base 10; for strong acids watch dilution — [H+] from water matters if acid < ~10⁻⁶ M.