Which of the following statements is correct about an aqueous solution of an acid and of a base?
  1. Higher the pH, stronger the acid
  2. Higher the pH, weaker the acid
  3. Lower the pH, stronger the base
  4. Lower the pH, weaker the base
(a) (i) and (iii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (ii) and (iv)

AcademicChemistryNCERTClass 10

Correct Answer:  (d) (ii) and (iv)

Explanation: The pH values lie between 0 to 14 in which 0 to 7 is acidic medium and 7 to 14 is alkaline or basic medium.

Strong acid dissociates in an aqueous solution, releasing more hydrogen (H+ ) ions. Therefore has a pH range between 0-3.

Strong bases dissociate nearly completely in water; however, it releases hydroxyl (OH ) ions. Therefore has a pH range between 12-14.

Updated on 10-Oct-2022 13:27:12