Question

Calcium hydroxide + hydrochloric acid → calcium chloride + water

Which is the corresponding formula equation?
CaCl20) → Ca(s) + Cl29)
CaO(s) + H20(1) - Ca(OH)2(aq)
NaOH(aq) + 2HCl(aq) → NaCl(aq) + 2H201)
Ca(OH)2(5) + 2HCICD) CaCl2(aq) + 2H200)

Answer 1

D

Explanation: iIt is a neutralization reaction and neutralization reaction is a reaction between and acid and base to give salt and water. In the question above, Ca(OH)2 is the base and HCl is the acid, Ca(Cl)2 is the salt and H2O.

Answer 2

Answer : The correct balanced chemical reaction will be:

`Ca(OH)_2(aq)+2HCl(aq)\rightarrow CaCl_2(s)+2H_2O(aq)`

Explanation :

When calcium hydroxide react with hydrochloric acid then it react to give calcium chloride and water as a product.

This reaction is double-displacement reaction.

Double-displacement reaction : It is defined as the reaction in which the cation of two reactants molecule exchange their places to give two different products.

Thus, the correct balanced chemical reaction will be:

`Ca(OH)_2(aq)+2HCl(aq)\rightarrow CaCl_2(s)+2H_2O(aq)`