13 Facts on HCl + Mn2(SO4)3: What, How To Balance & FAQs

HCl and Mn2(SO4)3 are both inorganic compounds wherein HCl is a corrosive powerful acid and Mn2(SO4)3 is a metal sulfate. Let us analyze the reaction between HCl and Mn2(SO4)3  in detail.

Hydrochloric acid (HCl) is found in both liquid and gaseous forms and is typically prepared by dissolving hydrogen chloride in water. It is an odorless, colorless, acidic chemical that is highly reactive. Manganese (III) sulfate, Mn2(SO4)3, is a white transition metal sulfate and has a molar mass of 398.06 g/mol.

This article shall focus on the many aspects of the HCl + Mn2(SO4)3 reaction, such as the product, reaction type, intermolecular forces, and so on.

What is the product of HCl + Mn2(SO4)3

Manganese (III) sulfate reacts with HCl to form manganese (II) sulfate, chlorine, and sulfuric acid.

Mn2(SO4)3 + 2HCl —> 2MnSO4 + Cl2 + H2SO4

What type of reaction is HCl + Mn2(SO4)3

The reaction of HCl with Mn2(SO4)3 is a single displacement reaction.

How to balance HCl + Mn2(SO4)3          

Following are the steps to balance HCl + Mn2(SO4)3  reaction:

The chemical equation to be balanced: Mn2(SO4)3 + HCl = MnSO4 + Cl2 + H2SO4

  • The count of the total number of atoms of each element on the reactant side must equal the total number of atoms on the product side for the reaction to be balanced.
Atoms Reactant SideProduct Side
Table representing the count of atoms
  • In order to equate Manganese and Chlorine, MnSO4 and HCl are each multiplied by coefficient 2, as a result balancing the remaining unbalanced atoms (S, O and H) on both sides of the reaction.
  • Thus, the overall balanced chemical equation is:

Mn2(SO4)3 + 2HCl = 2MnSO4 + Cl2 + H2SO4

HCl + Mn2(SO4)3 Titration

  • Titration of HCl with Mn2(SO4)3 cannot be conducted to determine the volume of the analyte.
  • The reactant Mn2(SO4)3 acts as a salt in this reaction, yielding no significant results and besides, it is not an acid-base type of reaction.

HCl + Mn2(SO4)3 Net Ionic Equation

The net ionic equation of HCl + Mn2(SO4)3 is: 2H+ + 2Cl + 2Mn3+ + SO42- = 2Mn2+ + 2SO42- + Cl2 + 2H+ + SO42-

The steps to derive the net ionic equation are as follows:

  • Firstly, the complete balanced equation is written.

Mn2(SO4)3 + 2HCl —> 2MnSO4 + Cl2 + H2SO4

  • The atoms are then split into ions followed by elimination of the spectator ions. Thus, the overall net ionic equation between HCl and Mn2(SO4)3 is:

2H+ + 2Cl + 2Mn3+ + SO42- = 2Mn2+ + 2SO42- + Cl2 + 2H+ + SO42-

HCl + Mn2(SO4)3 Conjugate Pairs

The conjugate pairs formed during the reaction between HCl + Mn2(SO4)3 are:

  • Conjugate base of HCl = Cl
  • Conjugate base of H2SO4 = HSO4 

HCl + Mn2(SO4)3 Intermolecular Forces

  • Hydrogen bonding, dipole-dipole interactions and London dispersion forces are the intermolecular forces of attraction experienced by the HCl molecule.
  • Dipole-dipole (dipole exists between sulfur and oxygen), London dispersion and Ionic forces are the intermolecular forces that keep the molecules of Mn2(SO4)3 together.
Mn2 SO4 4
Mn2(SO4)3 Bonding

Is HCl + Mn2(SO4)3 a Buffer Solution

HCl + Mn2(SO4)3 is not a buffer solution as the solution contains strong Hydrochloric acid and a manganese salt.

Is HCl + Mn2(SO4)3 a Complete Reaction

HCl + Mn2(SO4)3 is a complete reaction as the reactants are totally consumed to yield complete products.

Is HCl + Mn2(SO4)3 an Exothermic or Endothermic Reaction

The reaction HCl + Mn2(SO4)3 is an exothermic reaction as heat is released to the surroundings during the course of the reaction.

Is HCl + Mn2(SO4)3 a Redox Reaction

HCl + Mn2(SO4)3 is a redox reaction where a change in oxidation state is observed for various elements in this reaction. For instance,

  • Mn2(SO4)3 functions as an oxidizing agent, reducing Mn from a +3 oxidation state on the reactant side to a +2 oxidation state on the product side.
  • HCl acts as a reducing agent, oxidizing Cl from a -1 oxidation state on the reactant side to a +0 oxidation state on the product side.

Is HCl + Mn2(SO4)3 a Precipitation Reaction

HCl + Mn2(SO4)3 is not a precipitation reaction, as no insoluble product is formed during the reaction.

Is HCl + Mn2(SO4)3 a Reversible or Irreversible Reaction

HCl + Mn2(SO4)3 is an irreversible reaction since MnSO4 and H2SO4 produced in this reaction are stable and cannot be utilized to recover the reactants under the same reaction parameters.

Is HCl + Mn2(SO4)3 Displacement Reaction

HCl + Mn2(SO4)3  is a displacement reaction as hydrogen ion displaces the sulfate ion from Mn2(SO4)3  to form H2SO4.

HCl Mn2 SO4 3 reaction
Displacement reaction


Manganese (III) sulfate reacts with hydrochloric acid to produce Manganese (II) sulfate and sulfuric acid in a single displacement reaction. During the reaction process, yellowish-green Chlorine gas evolved is an excellent oxidizing agent with biological applications.

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