Which of the following acids has the lowest pH? 0.1 M HBO, pK_a = 2.43
0) 1 M HA, pK_a = 4.55
0) 1 M HMO, pK_a = 8.23
0) 1 M HST, pK_a = 11.89
Pure water

Question

Which of the following acids has the lowest pH? 0.1 M HBO, pK_a = 2.43 0)1 M HA, pK_a = 4.55 0)1 M HMO, pK_a = 8.23 0)1 M HST, pK_a = 11.89 Pure water

Quizplus · Accepted Answer

The lower the pKa value, the stronger the acid. The pKa value for HBO is the lowest (2.43) compared to the other options. The lower the pKa value, the more acidic the solution will be, so the pH will be lower. Therefore, the correct answer is D) HBO.

Which of the Following Acids Has the Lowest PH? 0