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

The HCl + MnS reaction involves hydrochloric acid (HCl) and manganese(II) sulfide as the reactants. Let us focus on the characteristics of the HCl + MnS reaction.

Hydrochloric acid (HCl) is one of the strong acids and exists mainly in liquid form. Its molar mass is 36.458 g/mol. Manganese(II) sulfide (MnS) is a naturally occurring chemical and is found in the mineral alabandite and rambergite. The crystal structure of manganese sulfide and sodium chloride (NaCl) is the same.

In this article, we will study interesting facts of “HCl + MnS” reaction, including product, ionic reaction, etc.

What is the product of HCl and MnS?

The HCl + MnS reaction forms manganese (II) chloride (MnCl2) and hydrogen sulfide (H2S) as products.

2HCl + MnS = MnCl2 + H2S

What type of reaction is HCl + MnS?

The HCl + MnS reaction is categorized as a displacement reaction. As the counter ions of one reactant are getting replaced with the counter ions of another reactant.

How to balance HCl + MnS?

To balance the reaction please follow the following steps:

Step 1: Identify the participating elements

The elemental identification should be done first. Like, in this reaction the participating elements are H, Cl, Mn & S.

Step 2: Find the coefficients of the elements

The coefficients of the elements participating in the reaction should be altered.

Step 3: Balance the reaction

Now, the coefficients of the compounds on both sides of the equation should be equal to get the balanced equation. The final balanced reaction will be:

2HCl + MnS = MnCl2 + H2S

HCl + MnS titration

HCl cannot be titrated with MnS, as MnS is not a base.

HCl + MnS net ionic equation

The net ionic equation for the HCl + MnS reaction is:

2H+(aq) + MnS(s) = Mn2+(aq) + H2S(g)

The following steps are used to determine the net ionic equation:

  • The reacting compounds should be dissociated into their respective ions.
  • The dissociation of reactants and products into ions will give the complete ionic equation.
  • The spectator ions should be struck off from both sides of the equation, which will give the net ionic equation.
Ionic Equation

HCl + MnS conjugate pairs

  • Conjugate base of HCl = Cl (MnCl2)
Conjugate Pair

HCl and MnS intermolecular forces

HCl + MnS reaction enthalpy

The reaction enthalpy of the HCl + MnS reaction is -120.6 kJ (approx.). The enthalpy of a reaction is determined as:

Enthalpy of products – Enthalpy of reactants = Enthalpy of reaction

CompoundsEnthalpy (kJ/mol)
HCl-167.15
MnS-214.2
MnCl2-481.3
H2S-20.6
Enthalpy of Formation

Is HCl + MnS a buffer solution?

The HCl + MnS is not a buffer solution. This reaction involves strong acid, HCl, and a buffer solution that needs the combination of a weak acid and conjugate base of that acid.

Is HCl + MnS a complete reaction?

The HCl + MnS reaction is a complete reaction because both the reactants are completely transformed into products.

Is HCl + MnS an exothermic or endothermic reaction?

The HCl + MnS reaction is an exothermic reaction because of the generation of heat due to an increase in the temperature of the reaction.

Is HCl + MnS a redox reaction?

The HCl + MnS is not a redox reaction because there is no change in the oxidation state of the reactants and products.

Is HCl + MnS a precipitation reaction?

The HCl + MnS reaction is not a precipitation reaction because the formation of a precipitate is not observed.

Is HCl + MnS reversible or irreversible reaction?

The HCl + MnS reaction is irreversible because the reactants are completely consumed leading to the formation of products.

Is HCl + MnS displacement reaction?

HCl + MnS reaction is a displacement reaction. More appropriately, it is a double displacement reaction, as the counter ions of both reactants are interchanged.

How to balance HCl + MnS + HNO3 = MnCl2 + NO + S + H2O?

The above-mentioned reaction is a redox reaction. In this reaction, HNO3 is the oxidizing agent and MnS is the reducing agent. The oxidation and reduction half are as follows:

Oxidation: 3S2- – 6e = 3S0

Reduction: 2N5+ + 6e = 2N2+

Step 1: Identify the participating elements

The elemental identification should be done first. Like, in this reaction, the participating elements are H, Cl, Mn, S, N, and O.

Step 2: Find the coefficients of the elements

The coefficients of the elements participating in the reaction should be altered.

Step 3: Balance the equation:

Now, the coefficients of the compounds on both sides of the equation should be equal to get the balanced equation.

Balanced equation:

6HCl + 3MnS + 2HNO3 = 3MnCl2 + 2NO + 3S + 4H2O

Conclusion

The HCl + MnS is a displacement reaction and is exothermic in nature. The products of this reaction are MnCl2 and H2S, which is a common reagents used in laboratories for various transformations and also in the manufacturing of pesticides and dyes.

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