Answer: The balanced chemical equation is written below.
Explanation:
Double displacement reaction is defined as the reaction in which exchange of ions takes place.
[tex]AB+CD\rightarrow AD+CB[/tex]
The chemical equation for the reaction of hydrochloric acid and potassium sulfide follows:
[tex]2HCl(aq.)+K_2S(aq.)\rightarrow 2KCl(aq.)+H_2S(g)[/tex]
By Stoichiometry of the reaction:
2 moles of hydrochloric acid reacts with 1 mole of potassium sulfide to produce 2 moles of potassium chloride and 1 mole of hydrogen sulfide gas
Hence, the balanced chemical equation is written above.
