Ideal gas law PV=nRT API

Solves the ideal gas law PV = nRT for the one omitted variable (pressure atm, volume L, moles, temperature K) and reports the gas constant used. Answers 'How many moles fill 22.4 L at STP?', 'What pressure does 1 mol exert in 10 L at 300 K?'.

Price$0.04per request

MethodPOST

Route/v1/chemistry/ideal-gas

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

chemistryideal-gaspv-nrtgas-lawpressurevolumemolesthermodynamics

API URLhttps://x402.hexl.dev/v1/chemistry/ideal-gas

Integration docs

Example request

{
  "pressureAtm": 1,
  "volumeL": 22.414,
  "temperatureK": 273.15
}

Example response

{
  "solvedVariable": "moles",
  "solvedValue": 1.000001,
  "pressureAtm": 1,
  "volumeL": 22.414,
  "moles": null,
  "temperatureK": 273.15,
  "gasConstant": 0.082057366,
  "gasConstantUnits": "L·atm·K⁻¹·mol⁻¹",
  "formula": "PV = nRT"
}

Input schema

{
  "type": "object",
  "properties": {
    "pressureAtm": {
      "type": "number",
      "examples": [
        1
      ]
    },
    "volumeL": {
      "type": "number",
      "examples": [
        22.414
      ]
    },
    "moles": {
      "type": "number"
    },
    "temperatureK": {
      "type": "number",
      "examples": [
        273.15
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}