##  [Dalton's Law](/daltons-law) 

  ##  [Dalton's Law](https://engineering.quantumdictionary.io/daltons-law-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

For a mixture of non‑reacting gases occupying the same volume at a uniform temperature, the total pressure equals the sum of the partial pressures of each component gas: P_total = Σ p_i. Each partial pressure p_i equals the pressure that gas would exert if it alone occupied the container at the same temperature.