Please look at the following below links which may help you in your analysis:

https://iubmb.onlinelibrary.wiley.com/doi/pdf/10.1016/0307-4412%2886%2990176-7

https://courses.lumenlearning.com/introchem/chapter/the-effect-of-ph-on-solubility/

Thanks

Isam Eldin Hussein Elgailani thank you very much! Much appreciated.

Dear Scientist,

I suggest to "Marvinbeans" software. Please look at the page which is written below. Enter the chemical structure and calculate charge in different pH.

https://docs.chemaxon.com/display/docs/Marvin+Beans+Examples