##  [UNIQUAC Model](/uniquac-model) 

  ##  [UNIQUAC Model](https://engineering.quantumdictionary.io/uniquac-model-0) 

  

 [![Engineering & Applied Technologies Dictionary](/sites/default/files/styles/large/public/2026-01/Engineering%20%26%20Applied%20Technologies.png.webp?itok=_IKO7_-n)](/topic-specific-dictionaries/engineering-applied-technologies)



**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A liquid-phase excess Gibbs energy model that partitions nonideal mixing into a combinatorial term (size and shape effects) and a residual term (energetic interactions), using structural parameters and binary interaction parameters to compute composition-dependent activity coefficients for VLE and LLE calculations.