Question

how is calcium hydroxide is a base?​

Answer 1

Answer:

Calcium hydroxide is a base because it accepts protons when added to a solution and have the ion of hydroxide.

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Answer 2

Answer:

The molecular formula for Calcium hydroxide is Ca(OH)2

Now, according to the Arrhenius theory, bases are substances which give Oh- ions in aqeous solutions ,and since Calcium hydroxide has these hydroxyl ions to give in aqeous solution, it is considered as a base.

Also, according to Bronsted and Lowry theory bases are the substances which accept H+ ions or to be precise they accept protons.

Which Calcium hydroxide does show in chemical reaction and hence it js also a base according to the Bronsted and Lowry theory of acids and bases.