Question
Pharmaceutical Chemistry Question on Advanced Pharmaceutical Chemistry
In plasma, phenobarbital is present as ionized and unionized forms in equal amount because:-
A
It is weakly acidic drug
B
It is weakly basic drug
C
pH of plasma is 6.8
D
pKa of the phenobarbital is 7.4
Answer
pKa of the phenobarbital is 7.4
Explanation
Solution
The correct answer is option (D) : pKa of the phenobarbital is 7.4