The physicochemical properties of H_{2}SO_{4} and K_{2}CO_{3} are researched as environmentally friendly to cure microbial activity in wastewater. Let us explore the reactions between H_{2}SO_{4} + K_{2}CO_{3}.

**The oxidation reaction between H _{2}SO_{4} and K_{2}CO_{3} is seen to be a solution to the removal of contaminants from water. The wastewater purifications can be extensively utilized using these chemicals.**

The reactivity of H_{2}SO_{4} and K_{2}CO_{3} was investigated to evaluate their potential as chemical adsorbents for water purification assays. Here, we discuss a more mechanistic approach to the reactions with a detailed explanation.

**1. What is the product of H**_{2}SO_{4} and K_{2}CO_{3}?

_{2}SO

_{4}and K

_{2}CO

_{3}?

**Potassium sulphate, water molecules, and bubbles of carbon dioxide gas are formed when sulphuric acid reacts with potassium carbonate.**

**H _{2}SO_{4} + K_{2}CO_{3} = K_{2}SO_{4} + CO_{2} + H_{2}O**

**2. What type of reaction is H**_{2}SO_{4} + K_{2}CO_{3}?

_{2}SO

_{4}+ K

_{2}CO

_{3}?

**H _{2}SO_{4} + K_{2}CO_{3} is an acid-base neutralization reaction where K_{2}CO_{3 }is a base and H_{2}SO_{4 }is an acid.**

**3. How to balance H**_{2}SO_{4} + K_{2}CO_{3}?

_{2}SO

_{4}+ K

_{2}CO

_{3}?

**We can balance the reaction K _{2}CO_{3} + H_{2}SO_{4} = K_{2}SO_{4} + CO_{2} + H_{2}O as per the following algebraic method,**

**Step 1- Each reactant and product in the equation is labeled with a variable (A, B, C, D, and E) to represent unknown coefficients.****A K**_{2}CO_{3 }+ B H_{2}SO_{4}= C K_{2}SO_{4}+ D CO_{2 }+ E H_{2}O**Step 2 – Now, the equation is solved by an appropriate number, considered to be the coefficient of reactants and products.****K = 2A = 2C, C = A = D, O = 3A + 4B = 4D +2D + E, H = 2B = 2E, S = B = C****Step 3- All the variables and coefficients are calculated by the Gauss elimination method, and lastly, we get****A = 1, B = 1, C = 1, D = 1, and E = 1****So, the overall balanced equation is,****K**_{2}CO_{3}+ H_{2}SO_{4}= K_{2}SO_{4}+ CO_{2}+ H_{2}O

**4. H**_{2}SO_{4} + K_{2}CO_{3 }titration

_{2}SO

_{4}+ K

_{2}CO

_{3 }titration

**The titration system mentioned above is an example of volumetric titration of a strong acid (H _{2}SO_{4}) against a strong base (K_{2}CO_{3}). We hereby discuss the apparatus and chemicals involved, conditions, and experimental procedures required for the titration.**

**Apparatus used**

**Burette, burette clamps, pipette, volumetric flask, conical flask, dropper, and beakers.**

**Indicator**

**Methyl orange is the specific indicator used in the titration of K _{2}CO_{3} and H_{2}SO_{4}.**

**Procedure**

**The burette is filled with standard H**_{2}SO_{4 }solution and K_{2}CO_{3 }was taken in a conical flask.**The titration process is started by adding H**_{2}SO_{4 }dropwise to the conical flask and the flask was shaken continuously.**Methyl orange is chosen as an indicator that starts to change from yellow to orange when the reaction reaches the equivalence point.****The experiment is repeated concordantly for accurate results****The strength of H**_{2}SO_{4 }is estimated using the formulae**S2 = (V1 * S1)/V2 where S2 is the strength of the acid, V1 is the volume of base added, and S1 is the strength of the base and V2 is the volume of the acid used.**

**5. H**_{2}SO_{4} + K_{2}CO_{3 }net ionic equation

_{2}SO

_{4}+ K

_{2}CO

_{3 }net ionic equation

**The net ionic equation of K _{2}CO_{3} + H_{2}SO_{4} is **

**CO _{3}^{-2} (aq)+ 2H^{+} (aq)= CO_{2} (g) + H_{2}O (aq)**

**Following steps are used to derive the net ionic equation:**

**Firstly, write the balanced chemical equation and represent the physical states of reactants and products**

**K**_{2}CO_{3}(s) + H_{2}SO_{4}(aq) = K_{2}SO_{4}(s) + CO_{2}(g) + H_{2}O (aq)**Now, strong acids, bases and salts dissociates into ions whereas the pure solid substances and molecules do not dissociate****CO**_{3}^{-2}(aq)+ 2H^{+}(aq)= CO_{2}(g) + H_{2}O (aq)

**6. H**_{2}SO_{4} + K_{2}CO_{3 }conjugate pairs

_{2}SO

_{4}+ K

_{2}CO

_{3 }conjugate pairs

**H**._{2}SO_{4}can exist as conjugate pair of HSO_{4}^{–}**K**_{2}CO_{3}**can not form a conjugate pair due to absence of proton**.

**7. H**_{2}SO_{4} and K_{2}CO_{3 }intermolecular forces

_{2}SO

_{4}and K

_{2}CO

_{3 }intermolecular forces

**Strong hydrogen bonding is observed to be existing between the molecules of H**_{2}SO_{4}.**K**_{2}CO_{3 }molecules consists of London dispersion forces.

**8. H**_{2}SO_{4} + K_{2}CO_{3 }reaction enthalpy

_{2}SO

_{4}+ K

_{2}CO

_{3 }reaction enthalpy

**K _{2}CO_{3} + H_{2}SO_{4} show reaction enthalpy of -967.20 kJ/mol.**

**9. Is H**_{2}SO_{4} + K_{2}CO_{3 }a buffer solution?

_{2}SO

_{4}+ K

_{2}CO

_{3 }a buffer solution?

**K _{2}CO_{3} + H_{2}SO_{4} do not form a buffer solution as strong acids do not form a buffer.**

**10. Is H**_{2}SO_{4} + K_{2}CO_{3 }a complete reaction?

_{2}SO

_{4}+ K

_{2}CO

_{3 }a complete reaction?

**K _{2}CO_{3} + H_{2}SO_{4} is a complete reaction as stable products namely potassium sulphate, water, and carbon dioxide are formed as products.**

**11. Is H**_{2}SO_{4} + K_{2}CO_{3 }an exothermic or endothermic reaction?

_{2}SO

_{4}+ K

_{2}CO

_{3 }an exothermic or endothermic reaction?

**K _{2}CO_{3} + H_{2}SO_{4} is an exothermic reaction because the enthalpy rate is observed to be negative.**

**12. Is H**_{2}SO_{4} + K_{2}CO_{3 }a redox reaction?

_{2}SO

_{4}+ K

_{2}CO

_{3 }a redox reaction?

**K _{2}CO_{3} + H_{2}SO_{4} do not show a redox reaction as reduction and oxidation of compounds do not occur.**

**13. Is H**_{2}SO_{4} + K_{2}CO_{3 }a precipitation reaction?

_{2}SO

_{4}+ K

_{2}CO

_{3 }a precipitation reaction?

**K _{2}CO_{3} + H_{2}SO_{4} is not a precipitation reaction as no precipitates are observed at the end of the reactions.**

**14. Is H**_{2}SO_{4} + K_{2}CO_{3 }reversible or irreversible reaction?

_{2}SO

_{4}+ K

_{2}CO

_{3 }reversible or irreversible reaction?

**K _{2}CO_{3} + H_{2}SO_{4} is irreversible reaction because the formed products cannot be converted back into the original reactants.**

**15. Is H**_{2}SO_{4} + K_{2}CO_{3 }displacement reaction?

_{2}SO

_{4}+ K

_{2}CO

_{3 }displacement reaction?

**K _{2}CO_{3} + H_{2}SO_{4} is a displacement reaction as double displacement of molecules from the reactants were observed.**

**Conclusions**

The reaction of sulphuric acid with potassium carbonate is an example of a carbonate acid reaction or neutralization reaction where an acid and a base react to form salt and water. Also, bubbles of carbon dioxide are produced in the reaction. The reaction is also an important solution for wastewater purifications.