NEETChemistryIonic Equilibrium
Match the following List-1 Acid List-2 Ka(ionization constant) A) HCN I) 6 . 8 × 10 - 4 B) H 2 C 2 O 4 II) 8 . 9 × 10 - 8 C) H 2 S III) 4 . 9 × 10 - 10 D) Niacin IV) 5 . 6 × 10 - 2 V) 1 . 5 × 10 - 5 The correct match is
Options
- AA B C D I II IV V
- BA B C D V II III IV
- CA B C D II III IV V
- DA B C D III IV II V
Correct answer
D. A B C D III IV II V
Step-by-step solution
The acidity is directly proportional to the acid dissociation constant. The inorganic acid are more acidic than the organic acids. Niacin is stronger acid than the hydrocyanic acid because niacin conjugate base is more stable. The acid dissociation constant of HCN is 4 . 9 × 10 - 10 . The acid dissociation constant for H 2 C 2 O 4 is 5 . 6 × 10 - 2 . The acid dissociation constant for H 2 S is 8 . 9 × 10 - 8 . The acid dissociation constant for niacin is 1 . 5 × 10 - 5 .