Question

hcl(aq) + ba(oh)2(aq) → express your answer as a chemical equation. identify all of the phases in your answer. a chemical reaction does not occur for this question.

Explanation:

Step1: Balance the chemical equation

The reaction between hydrochloric acid ($HCl$) and barium hydroxide ($Ba(OH)_2$) is a neutralization reaction. The products are barium chloride ($BaCl_2$) and water ($H_2O$). To balance the equation, we need 2 moles of $HCl$ for every 1 mole of $Ba(OH)_2$.
$2HCl(aq)+Ba(OH)_2(aq)
ightarrow BaCl_2(aq) + 2H_2O(l)$

Step2: Identify the phases

$HCl$ and $Ba(OH)_2$ are aqueous solutions as given in the problem. Barium chloride ($BaCl_2$) is also soluble in water and exists as an aqueous solution. Water is in the liquid phase.

Answer:

$2HCl(aq)+Ba(OH)_2(aq)
ightarrow BaCl_2(aq)+2H_2O(l)$