Chemistry Practice Problems Bronsted Lowry Acid and Base Practice Problems Solution: Hydrofluoric acid, HF, is a weak acid that dissoci...

Solution: Hydrofluoric acid, HF, is a weak acid that dissociates in water according to the following equation:HF(aq) + H2O(l) ⇌ H3O+(aq) + F−(aq)What is the conjugate base of HF in this reaction? Choose 1 answer:a. H2O(l)b. F−(aq)c. H3O+(aq)d. F2(g)

Problem

Hydrofluoric acid, HF, is a weak acid that dissociates in water according to the following equation:

HF(aq) + H2O(l) ⇌ H3O+(aq) + F(aq)

What is the conjugate base of HF in this reaction? Choose 1 answer:

a. H2O(l)

b. F(aq)

c. H3O+(aq)

d. F2(g)

Solution

We’re being asked to determine the conjugate base of HF.


Recall that the conjugate base of an acid is simply the compound formed when an acid loses a hydronium ion (H+). It's considered as a base because it can gain H+ to reform the acid.


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