Answer:
H+ ions
Step-by-step 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.