I-Calculator yemithetho yogesi efanele
Kuxazululwe i-PV = nRT nganoma yisiphi isiguquki, ngokukhethwa kwakho kwengcindezi, umthamo kanye neyunithi yezinga lokushisa.
Iziphetho zivuselelwa uma ubhala.
Malunga nale khadi
The ideal gas law ties together the four state variables of a gas in one equation, PV = nRT: pressure times volume equals the number of moles times the gas constant times the absolute temperature. The constant R = 8.314462618 J/(mol·K) in SI units. Rearranged, you can solve for any variable — P = nRT/V, V = nRT/P, n = PV/RT or T = PV/nR — and this calculator does exactly that, converting pressure (Pa, kPa, bar, atm, mmHg, psi), volume (m³, L, mL, cm³) and temperature (K, °C, °F) internally so you can work in whatever units you have.
The classic worked example is one mole of gas at standard temperature and pressure: at 0 °C (273.15 K) and 1 atm, V = nRT/P = 1 × 8.314 × 273.15 / 101,325 ≈ 0.0224 m³, or the familiar 22.4 litres per mole. Heat that gas to 300 K at constant pressure and the volume rises in proportion, since V ∝ T. A crucial detail: temperature must be absolute — always convert °C or °F to kelvin (add 273.15 to °C) before the math, which the calculator handles for you.
The law is called "ideal" because it assumes gas molecules have no volume and do not attract one another. Real gases follow it closely at ordinary pressures and temperatures well above their boiling point, and it is the everyday tool for scuba and diving gas calculations, chemistry stoichiometry of gases, HVAC and pneumatics, and estimating how a balloon or tyre responds to heating and cooling. It becomes less accurate at very high pressure or near condensation, where equations like van der Waals do better.
Imibuzo ebuzwa kaningi
Yini umthetho wegesi ofanele?
PV = nRT ixhuma ucindezelo, umthamo, ama-mole kanye nezinga lokushisa legesi elihle ngezinga eliqhubekayo R = 8.314 J/(mol·K). Yenza kabusha ukuxazulula noma yikuphi oshintshayo.
Yini amayunithi afanele?
Kungaphakathi konke kuyisi SI — amapascals, amamitha ayikhulu, ama-moles nama-kelvin — nge R = 8.314. I-mole eyodwa yegesi ku-0 °C (273.15 K) ne-1 atm ithatha cishe ama-22.4 L (0.0224 m³). Faka noma yiziphi iziyunithi ozithandayo; i-calculator iguqula kuwe.
Kungani izinga lokushisa lidinga ukuba liyi-kelvin?
PV = nRT isebenzisa izinga lokushisa eliphelele, lapho i-0 K iyisi zero esiphelele. I-Celsius ne-Fahrenheit zinomqondo othile, ngakho ukuxhuma ku-°C ngokuqondile kunikeza izimpendulo ezingalungile. Engeza u-273.15 ku-°C ukuthola i-kelvin — i-calculator ikwenza lokhu ngokuzenzakalela.
Yini i-STP nevolumu ye-molar?
Ukushisa okujwayelekile nokucindezeleka kuvame ukuba ngu-0 °C no-1 atm, lapho i-mole eyodwa yegesi efanele ithatha amalitha angama-22.4. Lo "volumu we-molar" ukuhlolwa okunembile: uma imiphumela yakho ye-mole eyodwa etholakala ezindaweni ezishisayo ibanga i-22.4 L, hlola kabusha amayunithi.
Ngabe imithetho efanele yegesi iwela phansi?
Ilungile kakhulu emazingeni okushisa aphansi kanye namaqondo okushisa aphezulu kakhulu engxenyeni yokubhoboza, kodwa ikhula ingalungile emazingeni okushisa aphezulu noma ezungeze ukucindezeleka, lapho ivolumu ye-molecule nezinto ezithakazelisayo zibalulekile. I-equations yegesi ebonakalayo njenge-van der Waals iphatha lokhu.
Ushintsho lwesibalo esisodwa luthinta kanjani abanye?
Ku-moles eqinile, ucindezelo nobukhulu buhlobene ngokushintshashintsha (umthetho kaBoyle), kanti ubukhulu nokushisa okuphelele kuhlobene ngokuqondile (umthetho kaCharles). Ukushisa ibhodlela eliqinile elivalayo nocindezelo lukhula ngokuhambisana nokushisa kwe-kelvin.
Yini ixabiso le-R okufanele ngisebenzise?
Kuxhomekeka kuyunithi. Ku-SI kuyi-8.314 J/(mol·K); ku-litre-atmospheres kuyi-0.08206 L·atm/(mol·K). Le kalkuli isebenza ku-SI ngaphakathi nge-R = 8.314, ngakho ungafaka noma yiziphi iziyunithi futhi ivumelane nazo.
API — sebenzisa le calculator kusuka kukhodi
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Ingxenye yendawo
GET https://calculator.free/api/v1/ideal-gas-law/curl
curl "https://calculator.free/api/v1/ideal-gas-law/?solve=volume&pressure=1&pressure_unit=atm&volume=22.4&volume_unit=l&moles=1&temperature=273.15&temperature_unit=k"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/ideal-gas-law/?" + new URLSearchParams({
"solve": "volume",
"pressure": "1",
"pressure_unit": "atm",
"volume": "22.4",
"volume_unit": "l",
"moles": "1",
"temperature": "273.15",
"temperature_unit": "k"
}));
const data = await r.json();
console.log(data.results);Izibalo ziyisilinganiso esisetshenziswa ukuqondisa kuphela, hhayi ukucebisa ngezimali, ukwelashwa noma ukukhokha.