15 Facts on HCl + Mn2O7: What, How to Balance & FAQs

HCl is a strong acid, whereas Mn₂O₇ is also an acid because of its highest oxidation state. Let us see some more facts about the reaction of HCl + Mn₂O₇.

In the reaction of HCl + Mn₂O₇, HCl is likely to completely dissociate into the aqueous media to form ions because of its acidic nature, producing an odd smell when it mixes with water. Mn₂O_7, known as manganese heptoxide, is a non-polar molecule. Its melting point is 5.9 °C, which can explode when we apply more heat.

In this article, we will find some of the characteristics of this reaction, like its products, conjugate pairs, and displacement reaction.

What is the product of HCl and Mn₂O₇

HCl reacts with Mn₂O₇ to produce manganous chloride (MnCl₂), chlorine (Cl₂), and water (H₂O) as the by-product.

Mn₂O₇ + 14 HCl = 2 MnCl₂ + 5Cl₂ +7H₂O

What type of reaction is HCl + Mn₂O₇

HCl + Mn₂O₇ is a type of acid-base reaction forming salt and water.

How to balance HCl + MN₂O₇

HCl + Mn₂O₇ reaction gets balanced as follows:

Step 1: Finding the number of atoms

• The table indicates the atoms and the number of atoms present in both reactants and products side of the reaction-
• Mn₂O₇ + HCl = MnCl₂ + Cl₂ +H₂O

Step 2: Place the coefficient in front of the atoms

• The reaction gets balanced by multiplying 4 with HCl and 2 with H₂O and 2 with MnCl₂.
• Mn₂O₇ + 4HCl = 2MnCl₂ + Cl₂ +2H₂O

Step 3: Placing the required number as a coefficient before the molecule

• Multiplying HCl , MnCl₂ , H₂0, and Cl₂ by 14,2,7 and 5 makes the reaction balanced.

• Mn₂O₇ + 14 HCl = 2 MnCl₂ + 5Cl₂ +7H₂O

HCl + Mn₂O₇ titration

HCl and Mn₂O₇ cannot be titrated together because HCl reacts with Mn₂O₇ to produce Cl₂. This Cl₂ will interfere during the titration.

HCl + Mn₂O₇ net ionic equation

• Split the strong electrolytes into ions on both reactant’s side and the products side, then after combining the ions to get the net ionic equation.
• The net ionic equation for the reaction of HCl+Mn₂O₇ is given by;

HCl + Mn₂O₇ conjugate pairs

• The conjugate base of HCl is Cl^–.
• Mn₂O₇ does not have any conjugate pairs because of its oxidizing property.

HCl and Mn₂O₇ intermolecular forces

• Dipole-Dipole interactions and London Dispersion forces are present in the HCl molecule, out of which dipole-dipole interactions are the strongest.
• Vander Waal forces are present in between Mn₂O₇ because of its covalent bonding.

HCl + Mn₂O₇ reaction enthalpy

The prediction of enthalpy for the reaction of HCl + Mn₂O₇ is impossible because of the strong oxidizing nature of Mn₂O₇.

Is HCl + Mn₂O₇ a buffer solution

HCl + Mn₂O₇ is not a buffer solution because HCl and Mn₂O₇ are not weak acids and so neither reactants form any buffer.

Is HCl + Mn₂O₇ a complete reaction

HCl + Mn₂O₇ is a complete reaction because the products formed during the reaction does not undergo any further reaction.

Is HCl + Mn₂O₇ an exothermic or endothermic reaction

We cannot predict the exothermic or endothermic nature of the HCl + Mn₂O₇ reaction because of the highest oxidation state of Mn₂O₇.

Is HCl + Mn₂O₇ a redox reaction

HCl + Mn₂O₇ is a redox reaction because Mn acts as an oxidizer and increases the charge of Cl from -1 to 0, and HCl is a reducing agent as it reduces the charge of Mn from 7 to 2.

Is HCl + Mn₂O₇ a precipitation reaction

HCl + Mn₂O₇ is not a precipitation reaction since no precipitate formed during this reaction.

Is HCl + Mn₂O₇ reversible or irreversible reaction

HCl + Mn₂O₇   is considered an irreversible reaction because the products doesn’t undergo backward reaction.

Is HCl + Mn₂O₇ displacement reaction

HCl + Mn₂O₇ is a double displacement reaction because Mn displaces from Mn₂O₇ to MnCl₂ and Cl displaced from HCl to Cl₂.

_Conclusion

The HCl + Mn₂O₇ reaction is peculiar because of the oxidizing nature of Mn₂O₇, which looks thick green in color and can decompose at room temperature. HCl is used in textile and rubber industries and is mainly used to generate chlorides, affecting mucous membranes.

Read more facts on HCl:

HCl + ZnCO3