Question

What ion do acids release in solution?

Answer 1

Answer:

H+ ions

Explanation:

Acid release H+ ions in water after dissociation while bases release OH⁻ ions in solutions.

During dissociation, acid releases H+ ions which are characterized by losing electron with small charge charge density while bases release OH⁻ ions which have high charge density.

Typical dissociation reaction

1. HCL ⇄ H⁺ + CL⁻

In the above reaction, HCL releases H+ ion in the solution.

2. NaOH ⇄ Na⁺ + OH⁻

While in this second reaction, OH⁻ is relased into the solution.

This illustration is backed by Arrhenius theory which defined acid as substance that produce H+ ions in solutions.

Answer 2

Answer: $H^+$

Explanation: All the Arrhenius and Bronsted Lowry acids release $H^+$ ions in solution.

According to Arrhenius and Lowry, acids are substances which release  $H^+$ ions when dissolved in water.

Thus $HCl, H_2SO_4 and H_3PO_4$ all are considered as acids,

$HCl\rightarrow H^++Cl^-$

$H_2SO_ \rightarrow H^++SO_4^{2-}$

$H_3PO_4\rightarrow H^++PO_4^{3-}$