Question

Conjugate base for Brönsted acids H₂O and HF are .
(1) OH⁻ and H₂F⁺ , respectively
(2) H₃O⁺ and F⁻ , respectively
(3) OH⁻ and F⁻ , respectively
(4) H₃O⁺ and H₂F⁺ , respectively

Answer 1

answer : option (3) OH⁻ and F⁻ , respectively

according to Brönsted -Lowry concept of acid - base, a proton donar is acid and proton accepter is base.

if we reduce one proton from its acid we will get conjugate base of given acid.

as H₂O is Brönsted acid now reduce one proton from it.

H₂O(Brönsted acid) ⇒OH⁻ (conjugate base) + H⁺

similarly, HF (conjugate acid) ⇒H⁺ + F⁻ (conjugate base)

also read similar questions : Question 7.37 What will be the conjugate bases for the Brönsted acids: HF, H2SO4 and HCO3?

Class XI Equilibrium Page 22...

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Question 7.38 Write the conjugate acids for the following Brönsted bases: NH2–, NH3 and HCOO–.

Class XI Equilibrium Pag...

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