the.com/acidity
How much a substance wants to hand its protons to literally anything else.
means A measure of how sour, sharp, or proton-donating a substance is — from the pH of lemon juice to the bite of a bad comment.
from From Latin 'acidus' meaning sour, itself from the verb 'acere,' to be sour or sharp — the same root that gives us 'acid' and, more distantly, 'acrid' and 'vinegar' (via 'acetum,' soured wine). The sharpness in the taste became the word for sharpness in chemistry, then in temperament.
- pH scale
- Logarithmic, so each step is tenfold stronger.
- stomach acid
- Around pH 1.5, strong enough to dissolve metal.
- ocean acidification
- Rising CO2 is lowering seawater pH globally.
- coffee complaint
- Baristas call bright flavor acidity, not sourness.