pKa values of four solutions are given below, which one is more acidic?
Correct answer: B. 10-4
- A. 10-3
- B. 10-4
- C. 250
- D. 10-2
Explanation
The acidity of a solution is inversely related to its pKa value; the lower the pKa, the stronger the acid. Therefore, among the given options, the solution with a pKa of 10-4 is the most acidic. Options with pKa values of 10-3 and 10-2 are less acidic, and a pKa of 250 indicates a very weak acid.
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: