Question

Complete the reaction. 2HCl(aq) + K2S(aq) →

Answer 1

Answer: The balanced chemical equation is written below.

Explanation:

Double displacement reaction is defined as the reaction in which exchange of ions takes place.

$AB+CD\rightarrow AD+CB$

The chemical equation for the reaction of hydrochloric acid and potassium sulfide follows:

$2HCl(aq.)+K_2S(aq.)\rightarrow 2KCl(aq.)+H_2S(g)$

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.

Answer 2

Answer:

H2S(g) 2KCl(aq)

Explanation:

The answer is actually H2S(g) 2KCl(aq) according to Knewton.