15 Facts on H2SO3 + K2CO3: What, How To Balance & FAQs

What is the product of H₂SO₃ and K₂CO₃?

K₂CO₃ is known as potassium carbonate. A sulphurous acid has a chemical formula of H₂SO_3. Let us see the reaction between H₂SO₃ & K₂CO₃.

Potassium carbonate (K₂CO₃) is a white salt soluble in water it is deliquescent in nature often appearing as a damp and wet solid. Sulphureous acid is a colourless liquid which is having burning sulphur smell.

H₂SO₃+ K₂CO₃ reaction gives us the idea about the product formed in this reaction, how to balance the reaction, titration enthalpy of reaction and many more facts.

What type of reaction is H₂SO₃ + K₂CO₃?

When sulphurous acid reacts with potassium carbonate it forms carbonic acid and potassium sulphite.

H₂SO₃+ K₂CO₃ K₂SO₃ + H₂O+ CO₂

What type of reaction is H₂SO₃ + K₂CO₃?

H₂SO₃ + K₂CO₃ is a double displacement reaction.

How to balance H₂SO₃ + K₂CO₃?

The H₂SO₃ + K₂CO₃ reaction is balanced by the following steps.

• For the reactions to be balanced the number of atoms of each element present on both the reactant and product side must be equal.
• Create an equation for each element present in the reaction, representing the number of atoms of an element present in the product and reactant.

Atom	Reactant Side	Product Side
Hydrogen	2	2
Sulphur	1	1
Oxygen	6	6
Potassium	2	2
Carbon	1	1

• All the elements have the same number of atoms in both the reactant and product side hence balanced reaction is as follows.

H₂SO₃+ K₂CO₃ K₂SO₃ + H₂O+ CO₂

H₂SO₃ + K₂CO₃ titration

H₂SO₃ + K₂CO₃ is a volumetric titration. This titration is carried out as follows.

Apparatus and Chemicals Required

50 mL burette, pipette, conical flask, measuring flask, Beaker, funnel, distilled water, Sulphurous acid, sodium carbonate.

Indicator

Methyl red indicator is used in the titration. Which gives the equilibrium point between the acid and base.

Procedure

• Standard H₂SO₃ and K₂CO₃ solutions were prepared with the same concentration.
• Then 10ml H₂SO₃ is taken in a conical flaskand K₂CO₃ solution is filled in the burette.
• K₂CO₃ solution is added dropwise in a conical flask containing H₂SO₃ and methyl red indicator.
• Titrate till the colour changes from orange to light pink.
• When acid H₂SO₃ isneutralised with baseK₂CO₃ it gives the endpoint indicated by colourchange.
• The final reading was noted and determined the amount of K₂CO₃ required to neutralize the H₂SO₃ by the M₁V₁ =M₂V₂ formula.

H₂SO₃ + K₂CO₃ net ionic equation

The net ionic equation of H₂SO₃ + K₂CO₃ is.

• The chemical equation with the physical state of both the product and reactant sides is as follows.
• H₂SO₃(aq) + K₂CO₃ (s)   K₂SO₃ (S) + CO₂ (g) + H₂O (aq).
• In this reaction salt of acid and base dissociates into ions. And pure solid substances do not dissociate into ions.
• 2H⁺ + CO^2- CO₂ + H₂O

H₂SO₃ + K₂CO₃ conjugate pairs

• H₂SO₃ has a conjugate pair of HSO₃^– .
• K₂CO₃ does not contain a proton and hence does not have conjugate pairs.

H₂SO₃ and K₂CO₃ intermolecular forces

• H₂SO₃ molecule contains strong hydrogen bonding between two H₂ atoms.
• K2CO3 molecule exhibits London Dispersion forces.

H₂SO₃ + K₂CO₃ reaction enthalpy

H₂SO₃ + K₂CO₃ reaction shows negative reaction enthalpy.

Is H₂SO₃ + K₂CO₃ a buffer solution?

The H₂SO₃ + K₂CO₃ reaction does not form a buffer solution because it contains acid.

Is H₂SO₃ + K₂CO₃ a complete reaction?

H₂SO₃ + K₂CO₃ is the complete reaction becausestable products like K₂SO₃, CO₂ & H2O are formed in this reaction.

Is H₂SO₃ + K₂CO₃ an exothermic or endothermic reaction?

H₂SO₃ + K₂CO₃ is an exothermic reaction as it has a negative enthalpy of reaction.

Is H₂SO₃ + K₂CO₃ a redox reaction?

H₂SO₃ + K₂CO₃ is not a redox reaction because oxidation and reduction do not occur in this reaction.

Is H₂SO₃ + K₂CO₃ a precipitation reaction?

H₂SO₃ + K₂CO₃ is not a precipitation reaction because the product’s precipitates are not formed.

Is H₂SO₃ + K₂CO₃ reversible or irreversible reaction?

H₂SO₃ + K₂CO₃is an irreversible reaction because the product formed cannot back converted into a reactant.

Is H₂SO₃ + K₂CO₃ displacement reaction?

H₂SO₃ + K₂CO₃ is a double displacement reaction because displacement in the molecule was observed in the reactant.

Conclusion

H₂SO₃ + K₂CO₃ is an acid-base double displacement reaction in this reaction K₂SO₃ salt CO₂ and H₂O are formed. H₂SO₃ + K₂CO₃ form stable product it does not undergo oxidation as well as reduction. It is a complete reaction.