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A sample of Ca(OH)2 is considered to be an Arrhenius base because it dissolves in water to yield
A. Ca2+ ions as the only positive ions in solution
B. H3O+ ions as the only positive ions in solution
C. OH– ions as the only negative ions in solution
D. H– ions as the only negative ions in solution



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)

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