Question

When calcium hydroxide powder is placed into a hydrochloric acid solution, aqueous calcium chloride and water are formed?

Answer 1

Explanation:

If two compounds chemically react together and upon interchanging their elements with each other is known as a double displacement reaction.

For example, $Ca(OH)_{2} + 2HCl \rightarrow CaCl_{2} + 2H_{2}O$

In this reaction, OH in $Ca(OH)_{2}$ is replaced by Cl of HCl. As a result, $CaCl_{2}$ is formed.

Therefore, the statement when  calcium hydroxide powder is placed into a hydrochloric acid solution, aqueous calcium chloride and water are formed, is true.

Answer 2

Answer: yes, when calcium hydroxide powder is placed into a hydrochloric acid solution, aqueous calcium hydroxide and water are formed.


Explanation:


1) Calcium hydroxide is a base whose chemical formula is: Ca(OH)₂

2) Hydrochloric acid is the acid with chemical formula HCl


3) Acids and bases react in a double replacement reaction forming salt plus water: Acid + Base → salt + water


4) The specific chemical equation for these reactants is:


Ca(OH)₂ (s) + 2HCl(aq) → CaCl₂ (aq) + 2H₂O(l)

5) CaCl₂ is calcium chloride, a salt,  and H₂O is water