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Manganese(II) Sulfate Formula – Structure, Properties, Uses, Sample Questions

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  • Last Updated : 22 Aug, 2022
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Manganese(II) Sulfate contains one Manganese (Mn), one Sulfur (S), and four Oxygen (O) atoms. Manganese (Mn) is a chemical compound with atomic number 25 in the periodic table. Sulfur (S) is a chemical element with the atomic number 16 in the periodic table. Oxygen (O) is the chemical element with atomic number 8 in the periodic table.

Manganese(II) Sulfate Formula

The chemical formula of Manganese(II) sulfate is MnSO4. Manganese (II) Sulfate contains one Manganese (Mn), one Sulfur (S), and four Oxygen (O) atoms. This chemical compound is a metal sulfate. It is also called Manganese Sulfate or Manganous Sulfate. In this, manganese has a +2 oxidation state. It looks like white crystals in its anhydrous form, and it is pale pink color solid in its hydrate form.

Structure of Manganese (II) Sulfate

The structure of Manganese (II) Sulfate is an Orthogonal structure.

Structure of Manganese II Sulfate

 

Preparation of Manganese (II) Sulfate

  • When Manganese (Mn) is treated with Sulfuric acid (H2SO4), we get Manganese (II) Sulfate (MnSO4) and Hydrogen (H2) gas.

Mn + H2SO4 ⇢ MnSO4 + H2

  • We can prepare it in the laboratory when Manganese dioxide ( MnO2) reacts with Sulfur dioxide ( SO2) and water (H2O).

MnO2 + SO2 + H2O ⇢ MnSO4(H2O)

2KMnO4 + 5H2O2 + 3H2SO4 ⇢ 2MnSO4 + K2SO4 + 5O2 + 8H2O

Physical Properties Of Manganese (II) sulfate

  • The molecular weight of Manganese (II) Sulfate is 151.001 g/mol.
  • The density of Manganese (II) Sulfate is 3.24g/cm3.
  • The Boiling Point of Manganese (II) Sulfate is 850°C.
  • The Melting Point of Manganese (II) Sulfate is 710°C. 
  • It is Pale pink solid salt.
  • It is soluble in water.
  • It is very slightly soluble in methanol and insoluble in ethanol and ether. 

Chemical Properties of Manganese (II) Sulfate

  • When manganese (II) sulfate reacts with water, we get Manganese (Mn), Sulfuric acid (H2SO4), hydrogen (H2), and oxygen gas (O2).

MnSO4 + H2O   →  Mn + H2SO4 +H2 + O2.

  • When Manganese (II) Sulfate reacts with Sulfuric acid (H2SO4), we get Permanganic acid (HMnO4), Sulfur dioxide (SO2), and water (H2O).                               

2MnSO4 + 3H2SO4  →  2HMnO4 + 2H2O + 5SO2.

Uses of Manganese (II) Sulfate

  • It is used in dry-cell batteries.
  • It is used as a fertilizer.
  • It is used as a livestock supplement.
  • It is used in ceramics and some fungicides.

FAQs on Manganese(II) Sulfate 

Question 1: Is MnSO4 acid or base?

Answer: 

Manganese (II) Sulfate (MnSO4) is an acid as it is soluble in water. When manganese (II) sulfate reacted with water we get Manganese, Sulfuric acid, hydrogen and oxygen gas.

MnSO4 + H2O ⇢ Mn + H2SO4 + H + O2.

Question 2: What is the oxidation state of Mn in MnSO4?

Answer: 

The oxidation state of Mn is +2 in MnSO4. It is a metal sulfate. Manganese (Mn) is a chemical compound with atomic number 25 in the periodic table. It is a mineral found in several foods like nuts, and seeds while grains, tea, and green leafy vegetables. It is a silvery-white metal with hard, brittle. 

Question 3: What are the health hazards of Manganese (II) Sulfate?

Answer: 

Health hazards of Manganese (II) Sulfate:

  • It may cause skin irritation.
  • It is harmful when it is inhaled, it causes eye, respiratory tract irritation.
  • It may also cause lung disease.
  • It can effect central nervous system.
  • It can cause gastrointestinal irritation.
  • It can cause vomiting, nausea and diarrhea.
  • It can cause headache, weakness of legs.
  • It can cause cough and bronchitis.

Question 4: Write the reaction of Manganese (II) Sulfate Sodium Sulfate.

Answer:

When Manganese (II) Sulfate is reacted with Sodium Hydroxide, we get Sodium Sulfate (Na2SO4) and Manganese (II) Hydroxide (Mn(OH)2).

MnSO4 + 2 NaOH ⇢ Na2SO4 + Mn(OH)2

Question 5: Write the reaction of Manganese (II) Sulfate and Hydrochloric acid.

Answer: 

When Manganese (II) Sulfate (MnSO4)is reacted with Hydrochloric acid (HCl), we get Manganese (II) Chloride (MnCl2) and Sulfuric acid (H2SO4).

MnSO4 + 2HCl ⇢ MnCl2 + H2SO4.

Question 6: Write the reaction of Manganese (II) Sulfate with Potassium Sulfate, Chlorine and water?

Answer: 

When Manganese (II) Sulfate reacted with Potassium Sulfate (K2SO4), Chlorine (Cl2) and water (H2O), we get Potassium Permanganate (KMnO4), Sulfuric acid (H2SO4), and Hydrochloric acid (HCl).

K2SO4 + 2MnSO4 + 5Cl2 + 8H2O ⇢ 2KMnO4 + 3H2SO4 + 10HCl.

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