Question

Which of the following shows the correct order of the components in the equation below?

HF+H_2O↽−−⇀H_3O++F^−

A: HF,H_2O,H^3O^+,F^ −
B: H_2O,HF,H^ 3O^+,F^−
C: F^−,H_3O^+,H_2O,HF
D: H_3O^+,F^−,HF,H_2O

Answer 1

The correct order of the components in the reaction HF + H2O ⇌ H3O+ + F- is hydrofluoric acid (HF), water (H2O), hydronium ion (H3O+), and fluoride ion (F-).

Step-by-step explanation:

The question revolves around the dissociation of hydrofluoric acid (HF) in water. The correct order of the components for the given chemical reaction HF(aq) + H_{2}O(l) ⇌ H_{3}O^{+}(aq) + F^{-}(aq) involves the reactants coming first followed by the products. Therefore, the correct order is: HF, H_{2}O, H_{3}O^{+}, F^{-}. The reaction is an example of an acid-base reaction where HF is the acid and H_{2}O (water) is the base when dissolved in water, producing hydronium ions (H_{3}O^{+}) and fluoride ions (F^{-}). This reaction is in a dynamic equilibrium, where the forward and reverse reactions occur simultaneously at the same rate.