bases like KOH NaOH K2CO3 Na2CO3 Cs2CO3 NaHCO3 will have varying pKb values in different solvents with varying temperature. Can anyone let me know if there is any computational method to determine basicity of those bases in a given condition?
I'm not a theorist and can' t answer your question. Before to proceed further, I would advise you to learn what is a definition of pKb in non-aqueous solutions, particularly in aprotic solvents.