Dear Deepika Singh many thanks for this interesting and important technical question. Although I am an inorganic chemist I must admit that I have very little experience with such calculations. It is 40 years ago that I learned this in the course of my chemistry studies. However, I recommend to you a potentially useful reference. Please have a look e.g. at the following articles entitled

1. Stability Constants of Metal Complexes in Solution

Chapter Stability Constants of Metal Complexes in Solution

The full text of this article is freely available as public full text on ResearchGate.

2. AN OVER VIEW OF POTENTIOMETRIC DETERMINATION OF STABILITY CONSTANTS OF METAL COMPLEXES

https://www.tsijournals.com/articles/an-over-view-of-potentiometric-determination-of-stability-constants-of-metal-complexes.pdf

(see attached)

Please also note that there is a closely related RG thread entitled

How can I calculate the stability constant of complexation reaction via potentiometry?

https://www.researchgate.net/post/How_can_I_calculate_the_stability_constant_of_complexation_reaction_via_potentiometry

Thank u Sir

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