Question

aqueous hydrogen chloride reacts with oxygen gas to form chlorine gas and liquid water. 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: Write the reactants and products

The reactants are aqueous hydrogen - chloride ($HCl(aq)$) and oxygen gas ($O_2(g)$), and the products are chlorine gas ($Cl_2(g)$) and liquid water ($H_2O(l)$). So the un - balanced equation is $HCl(aq)+O_2(g)
ightarrow Cl_2(g)+H_2O(l)$.

Step2: Balance the equation

We start by balancing the hydrogen and chlorine atoms. There are 1 hydrogen and 1 chlorine on the left - hand side and 2 hydrogens and 2 chlorines on the right - hand side for the $HCl$ and $Cl_2$ and $H_2O$ relationship. We put a 4 in front of $HCl$ to balance hydrogen and chlorine: $4HCl(aq)+O_2(g)
ightarrow 2Cl_2(g)+2H_2O(l)$. Now, the oxygen atoms are also balanced (2 oxygen atoms on both sides).

Answer:

$4HCl(aq)+O_2(g)
ightarrow 2Cl_2(g)+2H_2O(l)$