Answer :
The answer is C. Arrhenius bases increase the concentration of OH- in solution.
Answer : The correct option is, (C) [tex]OH^-[/tex] ions as the only negative ions in solution
Explanation :
According to the Arrhenius concept, an acid is a substance that ionizes in the water to give hydronium ion or hydrogen ion [tex](H^+)[/tex] and a bases is a substance that ionizes in the water to give hydroxide ion [tex](OH^-)[/tex].
A sample of [tex]Ca(OH)_2[/tex] is considered to be an Arrhenius base because when it dissolves in the water to yield [tex]OH^-[/tex] ions as the only negative ions in solution.
Hence, the correct option is, (C)