Q

Which of the following reactants will come in place of A and give a neutralisation reaction? Ca(OH)2 + A → CaCl2 + H2O

RRB Group D, 23-Aug-22 S-2 2022
✓ Answer: A Hydrochloric acid
In the reaction Ca(OH)2 + A → CaCl2 + H2O, hydrochloric acid (HCl) acts as reactant A, reacting with calcium hydroxide to produce calcium chloride and water, exemplifying a neutralisation reaction. The balanced equation is: Ca(OH)2 + 2HCl → CaCl2 + 2H2O.
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