Answer:
The acid increases the concentration of hydrogen ions.
Step-by-step explanation:
Arrhenius Base:
According to Arrhenius a base is substance that increase the concentration of hydroxyl ion in aqueous solution. In other words we can say that it increases the OH⁻ when dissociate into water.
Arrhenius acid:
According to Arrhenius an acid is substance that increase the concentration of hydrogen ion in aqueous solution. In other words we can say that it increases the H₃O⁺ when dissociate into water.
The hydrogen ion can not exist in free form so it react with water molecule and form hydronium ion.
HCl + H₂O → H₃O⁺+ Cl⁻
HCl is Arrhenius acid and donate proton.
Water accept that proton.