Compound A has a pK_a of 10 and compound B has a pK_a of 5.How many times more acidic is compound B compared to A?

Question

Quizplus · Accepted Answer

The difference between pK_a values of A and B is 5 (10-5). The pK_a scale is logarithmic, meaning that a difference of 1 unit represents a tenfold difference in acidity. Therefore, a difference of 5 units represents a 10^5 or 100,000-fold difference. To find out how much more acidic compound B is compared to A, we need to divide this factor by 10^5. This gives us a factor of 10^4, or 10,000. Therefore, compound B is 10,000 times more acidic than compound A.

Compound a Has a PKa of 10 and Compound B

Compound a Has a PK_a of 10 and Compound B