## What is the product of H_{2}SO_{3} and K_{2}CO_{3}?

K_{2}CO_{3} is known as potassium carbonate. A sulphurous acid has a chemical formula of H_{2}SO_{3. }Let us see the reaction between H_{2}SO_{3} & K_{2}CO_{3}.

**Potassium carbonate (K _{2}CO_{3}) 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.**

H_{2}SO_{3}+ K_{2}CO_{3} 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 H_{2}SO_{3 }+ K_{2}CO_{3}?

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

**H _{2}SO_{3}+ K_{2}CO_{3}**

**K**

_{2}SO_{3 }+ H_{2}O+ CO_{2}**What type of reaction is H**_{2}SO_{3} + K_{2}CO_{3}?

_{2}SO

_{3}+ K

_{2}CO

_{3}?

**H _{2}SO_{3} + K_{2}CO_{3} is a double displacement reaction.**

## How to balance H_{2}SO_{3} + K_{2}CO_{3}?

**The H _{2}SO_{3} + K_{2}CO_{3} 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 |

**Atoms Present in reaction**

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

**H _{2}SO_{3}+ K_{2}CO_{3}**

**K**

_{2}SO_{3 }+ H_{2}O+ CO_{2}## H_{2}SO_{3 }+ K_{2}CO_{3} titration

**H _{2}SO_{3} + K_{2}CO_{3} 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 H**_{2}SO_{3}and K_{2}CO_{3}solutions were prepared with the same concentration.**Then 10ml H**_{2}SO_{3 }is taken in a conical flaskand K_{2}CO_{3 }solution is filled in the burette.**K**_{2}CO_{3 }solution is added dropwise in a conical flask containing H_{2}SO_{3 }and methyl red indicator.**Titrate till the colour changes from orange to light pink.****When acid H**_{2}SO_{3 }isneutralised with baseK_{2}CO_{3 }it gives the endpoint indicated by colourchange.**The final reading was noted and determined the amount of K**_{2}CO_{3}required to neutralize the H_{2}SO_{3}by the M_{1}V_{1}=M_{2}V_{2}formula.

## H_{2}SO_{3} + K_{2}CO_{3} net ionic equation

**The net ionic equation of H _{2}SO_{3} + K_{2}CO_{3 }is**.

**The chemical equation with the physical state of both the product and reactant sides is as follows.****H**._{2}SO_{3}(aq) + K_{2}CO_{3}(s) K_{2}SO_{3}(S) + CO_{2}(g) + H_{2}O (aq)**In this reaction salt of acid and base dissociates into ions. And pure solid substances do not dissociate into ions.****2H**^{+}+ CO^{2-}**CO**_{2}+ H_{2}O

## H_{2}SO_{3} + K_{2}CO_{3} conjugate pairs

**H**._{2}SO_{3}has a conjugate pair of HSO_{3}^{–}**K**_{2}CO_{3}does not contain a proton and hence does not have conjugate pairs.

## H_{2}SO_{3 }and K_{2}CO_{3} intermolecular forces

**H**_{2}SO_{3 }molecule contains strong hydrogen bonding between two H_{2}atoms.**K2CO3 molecule exhibits London Dispersion forces.**

## H_{2}SO_{3} + K_{2}CO_{3} reaction enthalpy

**H _{2}SO_{3} + K_{2}CO_{3} reaction shows negative reaction enthalpy.**

## Is H_{2}SO_{3} + K_{2}CO_{3} a buffer solution?

**The H _{2}SO_{3} + K_{2}CO_{3 }reaction does not form a buffer solution because it contains acid.**

## Is H_{2}SO_{3 }+ K_{2}CO_{3} a complete reaction?

**H _{2}SO_{3} + K_{2}CO_{3 }is the complete reaction becausestable products like K_{2}SO_{3}, CO_{2} & H2O are formed in this reaction.**

## Is H_{2}SO_{3} + K_{2}CO_{3 }an exothermic or endothermic reaction?

**H _{2}SO_{3} + K_{2}CO_{3 }is an exothermic reaction as it has a negative enthalpy of reaction.**

## Is H_{2}SO_{3} + K_{2}CO_{3} a redox reaction?

**H _{2}SO_{3} + K_{2}CO_{3} is not a redox reaction because oxidation and reduction do not occur in this reaction.**

## Is H_{2}SO_{3} + K_{2}CO_{3} a precipitation reaction?

**H _{2}SO_{3} + K_{2}CO_{3} is not a precipitation reaction because the product’s precipitates are not formed.**

## Is H_{2}SO_{3} + K_{2}CO_{3} reversible or irreversible reaction?

**H _{2}SO_{3} + K_{2}CO_{3}is an irreversible reaction because the product formed cannot back converted into a reactant.**

## Is H_{2}SO_{3} + K_{2}CO_{3 }displacement reaction?

**H _{2}SO_{3} + K_{2}CO_{3 }is a double displacement reaction because displacement in the molecule was observed in the reactant.**

#### Conclusion

H_{2}SO_{3} + K_{2}CO_{3 }is an acid-base double displacement reaction in this reaction K_{2}SO_{3} salt CO_{2} and H_{2}O are formed. H_{2}SO_{3} + K_{2}CO_{3 }form stable product it does not undergo oxidation as well as reduction. It is a complete reaction.

Hi….I am Darshana Fendarkar, I have completed my Ph.D. from the University of Nagpur. My area of specialization is Inorganic Chemistry.

I have an experience as a Chemist at Earthcare Pvt. Ltd. Also I have 2 years of experience in teaching. Currently, I am working with Lambdageek as a Subject Matter Expert.