pKA=pH when:
Ans. B. When the concentration of ionized and unionized form is sameThis question is an application of Henderson Hasselbalch equation.It ispH=pKa+log/ is concentration of ionised form is concentration of unionised form.When =, thenpH=pKa+log/pH=pKa+log1i.e.pH=pKa+0
Solute is completely ionised
When the concentration of ionised and unionized form is same
Solute is completely unionized
All of the above
Proteins and Amino Acids