Question

How many pKa values are there for a monoprotic acid ?
a. 4
b. 2
c. 1
d. 3

Answer 1

Only one, so option c

Step-by-step explanation:

Because monoprotic as it says, had only one proton to lose giving it only one pka for example Hydrochloric Acid (H-Cl). unlike a diprotic acid which would have two pkas like carbonic acid for example (H2CO3).