pKa values of some acids are given below. Choose the weaker acid:
Correct answer: C. H2SO4(-3)
- A. HClO4(-10)
- B. HBr(-9)
- C. H2SO4(-3)
- D. HCl(-7)
Explanation
The strength of an acid is inversely proportional to its pKa value. A lower pKa value indicates a stronger acid. Among the given options, H2SO4 has the highest pKa value of -3, making it the weakest acid. In contrast, HClO4 with a pKa of -10 is the strongest, followed by HBr (-9), and then HCl (-7).
Last updated
Related questions
0.1 M HCl has pH = 1.0, it is about 100 times stronger than nitric acid. Then pH of acetic acid will be
1.0 M solution of NaOH is mixed with 1.0 M solution of H₂SO₄+ the solution formed is:
100 ml of each of 0.5 N NaOH, N/5 HCl and N/10 H2SO4 are mixed together. The resulting solution will be:
100 ml of N/5 NaOH will neutralize:
25 ml of a solution of barium hydroxide on titration with a 0.1 molar solution of hydrochloric acid gave a titre value of 35ml. The molarity of barium hydroxide solution was: