Endless Facts, One Snippet at a Time
The pH Scale Explained: From Lemon Juice to Drain Cleaner
- The pH scale runs from 0 to 14, showing how acidic or basic a solution is.
- A pH of 7 is neutral—pure water sits right in the middle.
- Lemon juice has a pH around 2, making it a strong acid with a tangy bite.
- Drain cleaner hits the other extreme, often with a pH of 13 or 14.
- Each step on the pH scale represents a tenfold change in acidity or basicity.
- Coffee and soda are mildly acidic, usually in the pH 4–5 range.
- Milk is near neutral, slightly acidic at about pH 6.5.
- Soapy water is basic, with a pH around 9–10, giving it that slippery feel.
- Human blood stays stable at about pH 7.4—vital for life’s balance.
- Litmus paper and pH meters make the invisible world of acids and bases easy to measure.