pH Scale Measures Acid Power
The pH scale logarithmically quantifies acidity from 0 to 14, where each unit drop multiplies hydrogen ion concentration by 10. Lemon juice at pH 2 is 100 times more acidic than vinegar at pH 4. It guides everything from digestion to industrial processes.
💡 Fun detail:
Pure water sits neutral at pH 7, but ocean acidification from CO2 lowers it, stressing marine ecosystems.
Source: American Chemical Society