Did you know that pure water’s pH changes with temperature? No joke. At 0°C, pure water has a pH of about 7.47 (slightly basic). At 100°C, it drops to about 6.14 (slightly acidic). Wait—does that mean boiling water is acidic?
How to choose a home water test kit? — Wateriga
Relax. It’s a measurement technicality. The number moves because the self-ionization of water changes with heat, but the water itself stays neutral. Think of it like a chameleon: the color changes, but the lizard is still a lizard. Neutral is a relationship, not a fixed number.
So if someone smugly tells you “pure water is always pH 7,” gently remind them that at your kitchen’s boiling point, it’s not. (Then watch their brain short-circuit.)
The Side Comment You Need: Why This Matters Outside a Lab
Why should you care about the pH of something you’ll never drink? Because it’s the foundation of all water chemistry. Your swimming pool, your fish tank, even your coffee’s acidity—it all traces back to this one number.
Plus, it’s a great party trick. Next time someone boasts about their “alkaline water,” you can casually mention that pure water is neutral, and any alkalinity comes from added minerals. Watch their guru-crystals crumble.
What is pH of Water?- Everything You Should Know About Water
