wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Complete and balance the following reaction:

HCl


Open in App
Solution

Step 1: Thermal dissociation

  • When Hydrogen chloride (HCl) is heated above 500°C, It dissociates into Hydrogen (H2) and Chlorine (Cl2)
  • Thermal decomposition reaction of Hydrogen chloride is HCl(g)(Hydrogenchloride)>500°CH2(g)(Hydrogen)+Cl2(g)(Chlorine)

Step 2: Acidic properties

  • When dissolve in water Hydrogen chloride changes to form Hydrochloric acid.
  • Hydrochloric acid dissociates further into Hydrogen and Chlorine ion.
  • Decomposition reaction of Hydrochloric acid is as follows: HCl(aq)H2OH++Cl-HydrogenHydrogenChlorinechlorideionion.

Step 3: Balancing the equation:

  • The obtained reaction is unbalanced in nature, so first, we calculate the number of molecules on both sides of the reaction.
  • On the reactant side: 1 Hydrogen and 1 Chlorine are present in Hydrogen chloride.
  • On the product side: 2 molecules of Hydrogen and 2 molecules of Chlorine are present.

Step 4: Balancing the product molecules: by multiplying Hydrogen chloride with 2.

  • The chemical equation is as follows:2HCl(g)(Hydrogenchloride)>500°CH2(g)(Hydrogen)+Cl2(g)(Chlorine)
  • The total number of molecules on both sides of the reaction is equal.

Hence, the balanced chemical equation is as follows: 2HCl(g)(Hydrogenchloride)>500°CH2(g)(Hydrogen)+Cl2(g)(Chlorine)


flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Laboratory method of Preparation
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon