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) + SO42-(aq) + 2H+(aq) + 2Cl–(aq) → Mn2+(aq) + 2Cl–(aq) + 2H+(aq) + SO42-(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.
- SO42- 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,
Compounds | Enthalpy in KJ/mol |
---|---|
MnSO4(aq) | 1118.2 |
HCl(aq) | 166.8 |
MnCl2(aq) | 555.13 |
H2SO4(aq) | 909.27 |
∆Hf° = ∆Hf°(products) – ∆Hf°(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 SO42- 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.
Hi! I am Lubna Khan. I have done my Postgraduation in Chemistry at Jamia Millia Islamia, New Delhi. I have been in academia for years and have always welcomed new opportunities, lifestyles, and cultures coming my way.
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