Sakrekenaar
Skakel om tussen [H+], pH, pOH en [OH-1] en klassifiseer die suurheid.
Resultate werk op soos jy tik.
Aangaande hierdie sakrekenaar
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.
Dikwels gevra vrae
Wat is die pH - formule?
pH is die negatiewe basis-10 logaritme van die waterstof-eenheid konsentrasie, pH = -1 = -1[H+]. 'n Konsentrasie van 1x10-7 mol/L gee 'n neutrale pH van 7.
Hoe hou pH en puH verband?
Om 25 °C het pH + pOH = 14.'n Oplossing van pH 3 het dus pH 11 en sy hidroxide - konsentrasie is [OH-1] = 10-1 mool/L.
Wat beteken die pH - skaal?
Below 7 is acidic, exactly 7 is neutral, and above 7 is basic (alkaline). The scale usually runs 0–14, though very strong acids or bases can fall slightly outside it. The calculator classifies your value as acidic, neutral or basic.
Waarom is pH normale?
Waterstof-en- konsentrasies wissel oor baie ordes van omvang, so 'n log skaal hou die getalle beheerbaar. Elke eenheid is 'n tienvoudige verander: pH 4 is tien keer suurder as pH 5 en honderd keer meer as pH 6.
Hoe vind ek [H+] uit'n pH - waarde?
Invert the definition: [H⁺] = 10^(−pH). A pH of 3 gives [H⁺] = 10⁻³ = 0.001 mol/L. Choose "from a pH value" mode and the calculator returns the concentration for you.
Verander pH met temperatuur?
Ja. Die neutrale punt van 7 en die pH + pOH = 14 hou vas teen 25 °C; by hoër temperature is meer, so neutrale pH daal onder 7 en die som val effens. Hierdie hulpmiddel gebruik die standaard 25 °C waardes.
API ← gebruik hierdie sakrekenaar van kode
Bel hierdie sakrekenaar as 'n vry JSON-punt takies wat nodig is. Stuur die veldwaardes hieronder as navraag parameters of JSON. Enigiets wat jy weglaat gebruik dieselfde verstek hierdie bladsy is vooraf gevul met; 'n onbekende parameter is 'n 400, nooit' n stil nul. Lees die volle API docs →
Einde punt:
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);Die resultate is skattings van algemene leiding, nie net finansiële, mediese of belastingvoorligting nie.