JEE Main Chemistry question

Chemistry Equilibrium JEE Main

Given, HF+H₂O→(Ka)H₃O⁺+F⁻, F⁻+H₂O→(Kb)HF+OH⁻. Which relation is correct?

(A)Kb = Kw
(B)Kb = 1/Kw
(C)Ka × Kb = KwCorrect
(D)Ka/Kb = Kw

Answer: (C)

Solution

Standard conjugate acid-base relation for a weak acid/conjugate base pair.

Question ID VK-136430