pH Calculator
Kusinthanitsa pakati pa [H⁺], pH, pOH ndi [OH⁻] ndi kugawa acidity.
Zithunzizi zimasintha monga momwe mumalemba.
Zachidule
The pH scale measures how acidic or basic a solution is, defined as the negative base-10 logarithm of the hydrogen-ion concentration: pH = −log₁₀[H⁺], where [H⁺] is in moles per litre. Because it is logarithmic, each whole pH unit is a tenfold change in acidity — a pH 4 solution has ten times the [H⁺] of pH 5 and a hundred times that of pH 6. The scale runs from strongly acidic near 0, through neutral at 7, to strongly basic near 14. This calculator converts a concentration to pH, a pH back to concentration, or starts from pOH.
As a worked example, pure water has [H⁺] = 1 × 10⁻⁷ mol/L, so pH = −log₁₀(10⁻⁷) = 7, which is neutral. A solution with [H⁺] = 10⁻³ mol/L has pH 3 and is acidic; one with pH 11 is strongly basic. The tool also returns pOH and the hydroxide concentration [OH⁻], using the water relationship pH + pOH = 14 at 25 °C — so pH 3 implies pOH 11 and [OH⁻] = 10⁻¹¹ mol/L — and labels the result acidic, neutral or basic.
pH governs a huge range of everyday and industrial processes: the safety of drinking water and swimming pools, soil conditions for gardening, food preservation and brewing, the action of enzymes in the body (blood is tightly held near pH 7.4), and countless chemistry and biology experiments. Note that the 14-point span and the pH + pOH = 14 rule are specific to 25 °C; at other temperatures the neutral point and the sum shift slightly because water’s self-ionisation changes.
Mafunso ofunsidwa nthawi zambiri
Kodi ndi chiyani formula ya pH?
pH ndi logarithm yoyipa ya 10 ya chitetezo cha hydrogen-ion, pH = -log₁₀[H⁺].Kuphatikiza kwa 1 × 10⁻⁷ mol/L kumapatsa pH yosasinthasintha ya 7.
Kodi pH ndi pOH ndi ogwirizana?
Pa 25 °C, pH + pOH = 14. choncho mchere wa pH 3 ali ndi pOH 11, ndipo kusonkhanitsa kwake kwa hydroxide ndi [OH⁻] = 10⁻¹¹ mol / L.
Kodi pH scale imatanthauza chiyani?
Pambuyo 7 ndi acidic, moyenera 7 ndi wopanda kanthu, ndi pamwamba 7 ndi basi (alkaline). The scale nthawi zambiri amayenda 0-14, ngakhale kwambiri mphamvu acids kapena mfundo angagwa pang'ono kunja kwake. The calculator amagawa wanu mfundo monga acidic, wopanda kanthu kapena basi.
N’chifukwa chiyani pH ndi logarithmic?
Hydrogen-ion concentrations span many orders of magnitude, so a log scale keeps the numbers manageable.Every unit is a tenfold change: pH 4 ndi nthawi makumi asanu acidic kuposa pH 5 ndi nthawi makumi asanu kuposa pH 6.
Kodi ndingapeze bwanji [H⁺] kuchokera pa mfundo ya pH?
Kusintha kwa tanthauzo: [H⁺] = 10^(−pH). pH ya 3 imapatsa [H⁺] = 10⁻³ = 0.001 mol/L. Sankhani "kuchokera pa tanthauzo la pH" mode ndipo calculator imabwerera ku concentration kwa inu.
Kodi pH imasintha ndi kutentha?
Ndiyo. Mtundu wa 7 wa neutral ndi malamulo a pH + pOH = 14 amagwira ntchito pa 25 °C; pa kutentha kwakukulu madzi amatulutsa ma ion ambiri, choncho pH ya neutral imagwa pansi pa 7 ndipo mitengo imatsika pang'ono.
API — kugwiritsa ntchito izi calculator kuchokera code
Kuti mudziwe zambiri, pitani ku www.json.org/json.html. Kuti mudziwe zambiri, pitani ku www.json.org/json.html. Chomweko chilichonse chimene mumasiya chimagwiritsa ntchito mfundo yoyamba yomweyi yomwe tsambali limagwiritsa ntchito; mfundo yosadziwika ndi 400, siyiyenera kukhala zero yosadziwika. Onani zonse API docs →
Chithunzi
GET https://calculator.free/api/v1/ph/curl
curl "https://calculator.free/api/v1/ph/?mode=conc&conc=1e-07&phval=7"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/ph/?" + new URLSearchParams({
"mode": "conc",
"conc": "0.0000001",
"phval": "7"
}));
const data = await r.json();
console.log(data.results);Zimenezi ndi zowerengera zokhudzana ndi malangizo amtundu uliwonse, si zokhudzana ndi ndalama, zamoyo kapena zokhudzana ndi ndalama.