13 Facts on HCl + Li2SO3: What, How To Balance & FAQs

HCl is a highly reactive which is used in many neutralization reactions whereas Li2SO3 (dilithium sulphite) has three elements. Let us examine this reaction in greater depth.

HCl is a very strong acid that breaks down into ions when dissolved in water. HCl, also known as muriatic acid, has a molar mass of 36.458 g/mol. HCl is colorless and has a pungent smell. Li2SO3 is a deliquescent powder of yellow-white color and is an inorganic compound with a molecular weight of 94 u.

HCl is formed by the reaction of hydrogen gas and chlorine gas and is used as a laboratory reagent. We are going to find out more about this reaction.

What is the product of HCl and Li2SO3?

HCl and Li2SO3 combine to form two products: lithium chloride and sulfurous acid.

  • Li2SO3+ HCl→ LiCl +H2SO3

What type of reaction is HCL + Li2SO3

The reaction of HCl and Li2SO3 is a double displacement reaction as Li and H interchange changes their anionic parts to form H2SO3 and LiCl.

How to balance HCl+ Li2SO3

The steps involved in the reaction of HCl + Li2S to form H2SO3 and LiCl are illustrated below:

  • The unbalanced equation is-
  • Li2SO3 + HCl→ H2SO3 + LiCl
  • Examine the number of atoms on both sides of the chemical equation
ElementsNumber of atoms on the reactant sideNumber of atoms on the product side
Balancing of the chemical equation
  • To balance Li atoms, we must multiply Li by 2 on the right side and We must multiply H by 2 on the left side to balance H atoms.
  • The balanced chemical equation is,
  • Li2SO3 + 2HCl→ H2SO3 + 2LiCl

HCl+ Li2SO3 titration

There are insignificant results in the titration of Li2SO3 and HCl, as Li2SO3 is a strong electrolyte.

HCl+Li2SO3 net ionic equation

  • First, the complete equation is written along with their physical states.
  • Li2SO3(aq) + 2HCl(aq) = 2LiCl(aq) + H2SO3(aq)
  • Next, break all the compounds which are soluble in water into their respective ions.
  • 2Li+(aq) +SO32-(aq) + 2H+(aq) + 2Cl(aq) = 2Li+(aq) + 2Cl(aq) + 2H+(aq) + SO32-(aq)
  • Now remove all the ions on both the product and reactant side, also known as spectator ions. In the above reaction, all the ions are spectator ions, so there is no reaction.

HCl + Li2SO3 conjugate pairs

In the above reaction no conjugate pairs can be made because when a proton is added to a base, a conjugated acid is formed, and when a proton is removed from an acid, a conjugated acid is formed. Here-

  • HCl is a strong acid with conjugated base Cl.
  • Li2SO3 has a conjugate base of Li+.

HCl and  Li2SO3 intermolecular forces

  • Between the HCl molecule, there are two types of intermolecular forces present, namely: dipole-dipole interaction and London dispersion force.
  • Between the Li2SO3 molecule, an ionic bond is present. The ions are Li2+and SO3-, respectively.

HCl + Li2SO3 reaction enthalpy

HCL + Li2SO3 reaction enthalpy has not been studied yet.

Is HCl + Li2SO3 a buffer solution

HCl+Li2SO3 will not be a buffer solution as HCl is a strong acid, and a solution is said to be buffer when it involves a weak acid and salt from weak base or salt of the respective weak base.

Is HCl + Li2SO3 a complete reaction

HCl + Li2SO3 is a complete reaction because this reaction has reached it’s point of equilibrium as in concentration of both reactants and products are stable.

Is HCl + Li2SO3 an exothermic or endothermic reaction

The reaction between HCl + Li2SO3 is exothermic as it releases a large amount of heat because the formation of ionic compounds is always an exothermic reaction.

Is HCl + Li2SO3 a redox reaction

HCl + Li2SO3 is not a redox reaction, and the reason is that there is no change in the oxidation numbers on both sides (reactant and product).

Is HCl +Li2SO3 a precipitation reaction

HCl + Li2SO3 is not a precipitation reaction as the products formed, LiCl and H2SO3, are both aqueous and hence, soluble in water.

Is HCl +Li2SO3 reversible or irreversible reaction

HCl +Li2SO3 is irreversible as this reaction moves only in one direction.

Is HCl+ Li2SO3 displacement reaction

HCl + Li2SO3 is not a displacement reaction because both Li and H interchange their anionic parts, making it a double displacement reaction.


HCl + Li2SO3 is a strong acid reaction with the salt of a weak base, and the product formed is a weak acid. The product formed, H2SO3, is colorless reducing agent but is unstable in aqueous solution, whereas LiCl is a white solid , and form crystalline hydrates and is widely used in the process of electrolysis.

Deepali Arora

Hi....I am Deepali Arora and presently working as a Subject Matter Expert in Chemistry. I have henceforth completed my graduation and post-graduation in life sciences and chemistry respectively. I am highly inquisitive as far as learning and experimental aspects are concerned. I am looking forward to strengthening my career in the same field. I am good at troubleshooting and have a good critical thinking and analytical approach. Connect me via LinkedIn: https://www.linkedin.com/in/deepali-arora-571707202

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