15 Facts on H2SO3 + FeCO3 : What, How To Balance & FAQs

FeCO3 is a carbonate salt in which Iron has an oxidation state of +2. Let us see a few facts on H2SO3 + FeCO3.

Sulfurous acid has a pungent odor of burning sulfur. Its density is 2.5 g/cm3. 1.789 is its index of refraction and its heavy atom count is four. FeCO3 has a mass number of 115.9, and the compound is canonicalized. 

Let us discuss the reaction type and balancing in this article.

What is the product of H2SO3 and FeCO3?

H2SO3 and FeCO3 have the following products. Mikasaite (Fe2(SO4)3 ), Sulfur (S), Carbon Dioxide (CO2) and water (H2O).

FeCO3 + H2SO3  → Fe2(SO4)3 + S + CO2 + H2O

What type of reaction is H2SO3 + FeCO3?

The reaction between H2SO3 and FeCO3 is a disproportionation reaction as H2SO3 is oxidized and reduced. It is also a redox reaction.

How to balance H2SO3 + FeCO3 ?

This reaction between H2SO3 + FeCO3 is not balanced as the number of molecules in the reactants and product are unequal. 

FeCO3 + H2SO3  → Fe2(SO4)3 + S + CO2 + H2O

  • So, we have to balance the reaction subsequently.
  •  We should first assign coefficients to all molecules present in the reaction. We use H, I, J, K, L and M as we have six molecules. The reaction will look like this,
  • H FeCO3 + I H2SO3 →J Fe2(SO4)3 + K S + L CO2 + M H2O
  •  The labeled coefficients can be used as alphabets for reactants and products.
  • Fe = H+ 2J, O= 3H+ 3I + 12J + 2L + 2M, H=2I+ 2M, S =I + 3J + K, C= 3H + L .
  • we can calculate the coefficient values using by Gaussian elimination method.
  • H= 2, I = 5, J =1, K =2, L = 2, M = 5
  • So, the balanced equivalence of the reaction is,
  • 2 FeCO3 + 5 H2SO3 → Fe2(SO4)3 + 2 S + 2 CO2 + 5 H2O

H2SO3 + FeCO3 titration?

 In the reaction between H2SO3 and FeCO3, titration does not occur, as vigorous acids like H2SO3  have a pKa value of 1.181 and cannot be used for titration. Fe is a local irritant to the lungs. H2SO3 will cause eye damage if not used properly.

H2SO3 + FeCO3 net ionic equation?

H2SO3  and FeCO3 have the following Ionic equation

Fe2++ CO3 2- + 10 H+ + 5 SO32- → Fe2+ + 3 SO32- + 2 S6+ + 2 CO24+ + 10 H+ + 5 O2-

  • We should follow the steps to arrive at the net ionic equation.
  • Step-1 Write the balanced chemical equation and represent the states (physical) of reactants and products.
  • FeCO3 (aq) + H2SO3 (aq) → 2HCl (aq) + 2 S (g) + 2 CO2 (g) + 5 H2O (aq)
  • Step-2 Salts, acids and bases dissociate into ions, but pure substances and molecules fail to do so. The final equation after dissociation is 
  • Fe2+ + CO3 2- + 10 H+ + 5 SO32- → Fe2+ + 3 SO32- + 2 S6+ + 2 CO24+ + 10 H+ + 5 O2-

H2SO3 + FeCO3 conjugate pairs?

H2SO3 + FeCO3 has the following conjugate pairs,

  • H2SO3 is the conjugate acid of HO3S.
  • FeCO3  has no conjugate acid-base pair
hso3 1 1
Conjugate acid of H2SO3

H2SO3 and FeCO3 intermolecular forces?

The reaction between H2SO3 and FeCO3 has the following intermolecular forces,

  • FeCO3 electrostatic force of attraction because it is an ionic compound.
  •  H2SO3  has Hydrogen bonding and dispersion forces.

H2SO3 + FeCO3 reaction enthalpy?

H2SO3 + FeCO3 reaction, their enthalpy has not been established because of no thermodynamic process.

H2SO3 + FeCO3 a buffer solution?

H2SO3 + FeCO3 as a buffer is not possible as H2SO3 is used. A strong acid will not form a buffer solution. A buffer is formed when weak acid and weak base are used.

Is H2SO3 + FeCO3 a complete reaction?

H2SO3 + FeCO3 is a complete reaction with Mikasaite (Fe2(SO4)3 ), Sulfur (S), Carbon Dioxide (CO2) and water (H2O) as their products.

2 FeCO3 + 5 H2SO3 → Fe2(SO4)3 + 2 S + 2 CO2 + 5 H2O

Is H2SO3 + FeCO3 an exothermic or endothermic reaction?

H2SO3 + FeCO3 is an Exothermic reaction because heat is liberated.

Is H2SO3 + FeCO3 a redox reaction?

H2SO3 + FeCO3 is a redox reaction as a change is observed in the oxidation number of Fe from Fe2+ to Fe3+. There is a change in the Oxidation number of Sulphur from 4 to 0 and +6.

Is H2SO3 + FeCO3 a precipitation reaction?

H2SO3 + FeCO3 is a precipitation reaction in which FeCO3 is obtained as a residue.

Is H2SO3 + FeCO3 reversible or irreversible reaction?

H2SO3 + FeCO3 is an irreversible reaction because gaseous products are formed.

Is H2SO3 + FeCO3 displacement reaction?

H2SO3 + FeCO3 is not a displacement reaction because Fe does not replace H.

Conclusion

In conclusion, the reaction between H2SO3and FeCO3 is a disproportionation reaction. No buffer solution is formed as strong acid is used. FeCO3 plays an important role in iron supplements for animals H2SO3 is used in biocides.