Question

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 1

The answer is C. Arrhenius bases increase the concentration of OH- in solution.

Answer 2

Answer : The correct option is, (C)
`OH^-` 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
`(H^+)` and a bases is a substance that ionizes in the water to give hydroxide ion
`(OH^-)`.

A sample of
`Ca(OH)_2` is considered to be an Arrhenius base because when it dissolves in the water to yield
`OH^-` ions as the only negative ions in solution.

Hence, the correct option is, (C)