15 Facts on HCl + MnSO4: What, How To Balance & FAQs

Manganese sulfate (MnSO₄) is an acidic ionic salt, while HCl (hydrochloric acid) is a colorless acid with a pungent odor. Let us investigate the HCl-MnSO4 reaction thoroughly.

Hydrochloric acid reacts with manganese sulfate via a displacement reaction. MnSO4 is an inorganic hygroscopic salt that absorbs moisture from the air to form hydrates, whereas HCl is a strong acid that exists both in the liquid as well as vapor states.

This article will deal with the reaction enthalpy, products, molecular forces, and other factors of the HCl and MnSO₄ reaction in detail.

What is the product of HCl and MnSO₄

MnCl₂ (Manganese dichloride) and H₂SO₄ (Sulfuric acid) are formed when HCl combines with MnSO₄.

MnSO₄ + HCl → MnCl₂ + H₂SO₄

What type of reaction is HCl + MnSO₄

HCl+MnSO₄ reaction is a double displacement reaction.

How to balance HCl + MnSO₄

The reaction of MnSO₄ with HCl is balanced using the following steps,

MnSO₄ + HCl → MnCl₂ + H₂SO₄

• First step is to identify the elements involved in the reaction. Here, Mn, H, Cl, S, and O are present in reactants and the products.

• Coefficients are added before the compounds in order to balance the number of elements on both sides. A coefficient of 2 is added before HCl to balance H and Cl. The balanced equation will be
• MnSO₄ + 2HCl → MnCl₂ + H₂SO₄

HCl + MnSO₄ titration

HCl cannot be used for the titration of MnSO₄ as both are strong acids. Also, a distinct color change is not observed for the reaction.

HCl + MnSO₄ net ionic equation

The net ionic equation for MnSO₄ + HCl is

MnSO₄(aq) + 2HCl(aq) → MnCl₂(aq) + H₂SO₄(aq)

The steps required to obtain the net ionic equation are listed below,

• The equation is balanced in the first step. With the use of stoichiometric coefficients, we can equate the number of elements on either side. The equation is given by,
• MnSO₄ + 2HCl → MnCl₂ + H₂SO₄

• The physical states of the substances are indicated.
• MnSO₄(aq) + 2HCl(aq) → MnCl₂(aq) + H₂SO₄(aq)

• The splitting of strong electrolytes into their ions is shown. All the compounds involved in this reaction are strong-electrolytes.
• Mn²⁺(aq) + SO₄^2-(aq) + 2H⁺(aq) + 2Cl^–(aq) → Mn²⁺(aq) + 2Cl^–(aq) + 2H⁺(aq) + SO₄^2-(aq)

• All the ions are spectator-ions so there is no net reaction. So, the net ionic equation for HCl+MnSO₄ is deduced.
• MnSO₄(aq) + 2HCl(aq) → MnCl₂(aq) + H₂SO₄(aq)

HCl + MnSO₄ conjugate pairs

Conjugate acid-base pairs are formed by HCl-MnSO₄.

• HCl as an acid, emits H⁺ and forms Cl^– as its conjugate base.
• SO₄^2- ion acting as a base takes up H⁺ forming conjugate acid(H₂SO₄).

HCl and MnSO₄ intermolecular forces

• Dipole-dipole interactions. and London-dispersion forces are present as intermolecular forces between the HCl molecules .
• MnSO₄ shows ion-dipole interactions as it is an ionic salt.

HCl + MnSO₄ reaction enthalpy

MnSO₄+HCl reaction enthalpy is -12.6 KJ/mol. The enthalpy is calculated using the tabulated values,

∆H_f^° = ∆H_f^°(products) – ∆H_f^°(reactants)

= 1464.4 – 1451.8 = -12.6 KJ/mol

Is HCl + MnSO₄ a buffer solution

MnSO₄ + HCl does not form a buffer solution as the acid (HCl) used is a strong acid and its combination with the manganese salt (MnSO₄) will not resist a change in pH.

Is HCl + MnSO₄ a complete reaction

MnSO₄ + HCl is a complete reaction because the products formed are quite soluble and will not undergo further reaction.

Is HCl + MnSO₄ an exothermic or endothermic reaction

MnSO₄+HCl reaction is exothermic as a large amount of heat is liberated during the reaction.

Is HCl + MnSO₄ a redox reaction

MnSO₄ + HCl reaction is not a redox reaction because the oxidation states of the elements does not show any change.

Is HCl + MnSO₄ a precipitation reaction

HCl+MnSO₄ reaction does not produce any precipitate, so this is not a precipitation reaction. The products obtained are completely soluble.

Is HCl + MnSO₄ reversible or irreversible reaction

The MnSO₄ + HCl reaction is an irreversible reaction as the hydrogen being less reactive cannot displace Mn from its salt making the backward reaction less feasible.

Is HCl + MnSO₄ displacement reaction

The reaction MnSO₄ + HCl is a double displacement reaction. Since manganese is more reactive, it displaces the hydrogen from HCl and forms MnCl₂ and then H⁺ further combines with SO₄^2- ion to form H₂SO₄.

Conclusion

MnSO₄ has wide applications in the livestock and agriculture industry. The Manganese salt (MnCl₂) is used as a precursor for the synthesis of myriad organomanganese compounds.