EngiRef / Formulas

Combined Gas Law

Relates pressure, volume, and temperature changes

Laws

Source Details

Id

thermo-combined-gas

Name

Combined Gas Law

Discipline

thermodynamics

Category

Laws

Latex

\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}

Description

Relates pressure, volume, and temperature changes

Conditions

Fixed amount of gas

Variables
[
  {
    "symbol": "P₁",
    "name": "Initial Pressure",
    "unit": "Pa",
    "siUnit": "Pa",
    "imperialUnit": "psi"
  },
  {
    "symbol": "V₁",
    "name": "Initial Volume",
    "unit": "m³",
    "siUnit": "m³",
    "imperialUnit": "ft³"
  },
  {
    "symbol": "T₁",
    "name": "Initial Temperature",
    "unit": "K",
    "siUnit": "K"
  },
  {
    "symbol": "P₂",
    "name": "Final Pressure",
    "unit": "Pa",
    "siUnit": "Pa",
    "imperialUnit": "psi"
  },
  {
    "symbol": "V₂",
    "name": "Final Volume",
    "unit": "m³",
    "siUnit": "m³",
    "imperialUnit": "ft³"
  },
  {
    "symbol": "T₂",
    "name": "Final Temperature",
    "unit": "K",
    "siUnit": "K"
  }
]
Solve For

P₁, V₁, T₁, P₂, V₂, T₂

Tags

gas, law, pressure, volume, temperature

Is Custom

false