For phenylalanine amino acid if at pH = 1.83, concentration of zwitter ion and its conjugate acid are same i.e.
While at pH 5.48, concentration of conjugate base and conjugate acid of zwitter ion are same i.e.
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/508647/original_10.2.png)
At what pH, concentration of zwitter ion and its conjugate base will be same? i.e
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/508649/original_10.3.png)