Question

To find the pKa of Z-123, you prepare a 0.084 mol/L test solution of the drug. The pH of the solution is determined to be 2.98. What is the pKa of Z-123?

(A question about the calculation method or formula would need to be provided for options)
A) Less than 2.98
B) Equal to 2.98
C) Greater than 2.98
D) Not enough information to determine

Answer 1

The pKa of Z-123 is 2.98.

Step-by-step explanation:

The pKa of Z-123 can be determined using the pH of the solution.

The pH of the solution is found to be 2.98.

The pKa is equal to the pH when the concentration of the acid and its conjugate base is the same.

Therefore, the pKa of Z-123 is 2.98.