Respuesta :
In chemistry, bases are substances that react with an acid to yield salt. Calcium hydroxide (Ca(OH)₂) is a base as it is a hydroxide of metal. Thus, option c is correct.
What are bases?
Bases are solutes that react with acidic substances to produce water and salt. It comprises substances with hydroxide ion that reacts with hydrogen ion of acid to complete the neutralization reaction.
The carbonates, oxides, and hydroxides of metals make the base that has a pH range of below 7 up to 14. The alkalinity of the substance depends on the ability to release the hydroxide ions in the solution.
Calcium hydroxide (Ca(OH)₂) is a base as it contains OH⁻ ions that are characteristic of bases. On the other hand, NaCl is salt and HF is an acid.
Therefore, Ca(OH)₂ is a base.
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