Sulphuric acid is a highly viscous acid and absorbs moisture from the air and, Hydrogen peroxide is known for its amphoteric nature. Let us discuss the reactions of H2SO4 + H2O2.
H2SO4 is an acid which is also known as oil of vitriol, immiscible with water and is used in the laboratory for analysis of various chemical species, on the other side, H2O2is an inorganic solvent used as a bleaching agent in industries and deep blue in color.
In the following parts of this article, we will discuss the product of the reaction H2SO4 + H2O2 with their net ionic products, reaction enthalpy, conjugate pairs, and type of reaction.
What is the product of H2SO4 and H2O2
H2SO5 (peroxymonosulphuric acid) and H2O are the products of the reaction H2SO4 + H2O2.
H2SO4 + H2O2 = H2SO5 + H2O
What type of reaction is H2SO4 + H2O2
The reaction H2SO4 + H2O2 is a combination reaction, as the reactants combine to form a product H2SO5 (Caro’s acid) which is a highly activated oxidizing agent.
How to balance H2SO4 + H2O2
The equation is balanced using the following these steps-
H2SO4 + H2O2 = H2SO5 + H2O
- Name the reactants and products with alphabets A, B, C, and D.
- A H2SO4 + B H2O2 = c H2SO5 + D H2O
- Modify the atoms with suitable numbers.
- H –>. A, B, C, D, S –> A, C, O –> A, B, C, D,
- Multiply the coefficients with suitable numbers.
- A = 1, B = 1, C = 1, D = 1
- To write the final equation reduce the lowest integer value
- Thus, the balanced equation is
- H2SO4 + H2O2 = H2SO5 + H2O
H2SO4 + H2O2 titration
H2SO4 cannot be titrated with H2O2 because of the amphoteric nature of H2O2 as it can produce both acid and base due to which it is not possible to calculate the unknown concentration and endpoint of the reactant.
H2SO4 + H2O2 net ionic equation
The net ionic equation for H2SO4 + H2O2 is –
H+ + HSO4- + 2H++ 2O– = HSO5- + H+ + OH– + H+
To drive the net ionic equation following steps are used
- Write the full reaction with respective states.
- H2SO4 (l) + H2O2 (l) = H2SO5 (l) + H2O (l)
- Split the atoms into ions.
- Thus, the net ionic equation is
- H+ + HSO4- + 2H++ 2O– = HSO5- + H+ + OH– + H+
H2SO4 + H2O2 conjugate pairs
- HSO4- is the conjugate base for acid H2SO4 after its protonation.
- H2O2 is amphoteric in nature and does not form any conjugate pairs.
H2SO4 + H2O2 intermolecular forces
- The covalent bond and strong electrostatic force of attraction are the intermolecular forces present in H2SO4.
- Dipole-dipole and the London dispersion forces with hydrogen bonds are present in H2O2.
H2SO4 + H2O2 reaction enthalpy
H2SO4 + H2O2 reaction enthalpy is -1005.2 kJ/mole
| Molecule | Enthalpy |
| H2SO4 | – 814 KJ/mol |
| H2O2 | 191.2 KJ/mole |
- So, the total enthalpy is =Enthalpy of H2SO4 – Enthalpy of H2O2
- (– 814 KJ/mole) – (191.2 KJ/mole)
- = -1005.2 kJ/mole
Is H2SO4 + H2O2 a buffer solution
H2SO4 + H2O2 is not a buffer solution as H2O2 is amphoteric and can form both acids and bases which will not allow the pH to increase more than 7.
Is H2SO4 + H2O2 a complete reaction
H2SO4 + H2O2 is a complete reaction as the combination of atoms and H2SO5(Caro’s acid) formation take place which indicates that the reaction is complete and cannot react further.
Is H2SO4 + H2O2 an exothermic or endothermic reaction
H2SO4 + H2O2 is an exothermic reaction as the bond dissociation of H2SO4 and H2O2 takes place and release a large amount of heat in an aqueous medium.
Is H2SO4 + H2O2 a redox reaction
H2SO4 + H2O2 is not a redox reaction as the oxidation states of the reactants and products are the same throughout the reaction.
Is H2SO4 + H2O2 a precipitation reaction
H2SO4 + H2O2 is not a precipitation reaction as the reactant and the products both are in liquid states and H2SO5 is formed in an aqueous medium only without any precipitation.
Is H2SO4 + H2O2 reversible or irreversible reaction
H2SO4 + H2O2 is an irreversible reaction because it is an acid-base reaction in which after the formation of the acid H2SO5, it is not possible again to break the bonds between them to make them separate or to be reactants again.
Is H2SO4 + H2O2 displacement reaction
H2SO4 + H2O2 is not a displacement reaction because there is only exchanging of ions without displacing any atom, ion, or molecule throughout the reaction.
How to balance H2SO4 + H2O2 + H2O = H3O + HSO4 + O2 + H2O
The equation is balanced using the following steps-
H2SO4 + H2O2 + H2O = H3O + HSO4 + O2 + H2O
- Name the reactants and products with alphabets A, B, C, and D, E, F, G
- A H2SO4 +B H2O2 + C H2O = D H3O +E HSO4 + F O2 + G H2O
- Modify the atoms with suitable numbers.
- H –. A, B, C, D, E, G S –> A, E, O –> A, B, C, D, E, F, G
- Multiply the coefficients with suitable numbers.
- A = 1, B = 1, C = 1, D = 1, E = 1, F = 1, G = 1.
- To write the final equation reduce the lowest integer value
- Thus, the final equation is
- H2SO4 + H2O2 + H2O = H3O + HSO4 + O2 + H2O
Conclusion
H2SO4 is an aid used for refining sugar and oil and can be used in chemical analysis too whereas, H2O2 is a deep blue color solvent slightly more viscous than water.
Hi….I am Soumya Chourasia, completed my Master’s in Chemistry. I am working as a Subject Matter Expert in Chemistry. Before this, I used to teach chemistry for competitive examinations and school as well.
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