Hydrogen bromide gas is dissolved in water to form hydrobromic acid (HBr). Let us examine how HBr reacts with water using the information in this article.
HBr is one of the strongest mineral acids and is a colorless to light yellow liquid. One oxygen and two hydrogen atoms are joined by covalent bonds in each of the molecules of water, which is denoted by the formula H2O.
Using this article as a guide, let us discuss how HBr reacts with water.
What is the product of HBr and H2O
The products of the reaction between HBr and H2O are H3O+ and Br–.
HBr(aq) +H2O(l) → H3O+(aq) + Br–(aq)
What type of reaction is HBr + H2O
The reaction of HBr + H2O is a dissociation reaction. HBr donates its H+ to water producing hydronium ion and anion Br–.
How to balance HBr and H2O
The equation of HBr + H2O is balanced because each element is present in equal amounts in both the reactants and products.
- Reactant side: H=3, Br=1, O=1
- Product side: H=3, Br=1, O=1
HBr +H2O titration
The titration of HBr and H2O is not possible. An anion and a cation are the results of the reaction between HBr and H2O.
HBr + H2O Net ionic equation
The net ionic equation of the reaction between HBr and H2O is : H+(aq) + Br–(aq) + H2O(l) → H3O+(aq) + Br–(aq)
- The ionic equation is:
H+(aq) + H2O(l) → H3O+(aq)
- The balanced chemical equation ought to be written first:
HBr(aq) +H2O(l) → H3O+(aq) + Br–(aq)
- Converting each of the soluble ionic compounds (those with an (aq)) into its corresponding ions.
H+(aq) + Br–(aq) + H2O(l) → H3O+(aq) + Br–(aq)
From both sides of the entire ionic equation, remove the spectator ions.
Is HBr + H2O Conjugate pairs
HBr + H2O are both conjugate acid-base pairs.
HBr and H2O intermolecular forces
Hydrogen bonding is formed between HBr and water. HBr is soluble in water as a result of this intermolecular hydrogen bonding.
HBr and H2O Reaction enthalpy
The standard reaction enthalpy for HBr and H2O is +201.22KJ/mol. It is calculated using the information given in the table.
| Compounds | Standard Enthalpy of formation (ΔHͦf) in KJ/mol |
|---|---|
| HBr(aq) | -36.3 |
| H2O(l) | -285.82 |
| H3O+(aq) | 0.0 |
| Br–(aq) | -120.9 |
Sum of enthalpies of reactant (ΔHͦf) = (-36.3) + (-285.82) = -322.12
Sum of enthalpies of product (ΔHͦf) = 0 + (-120.9)
Reaction Enthalpy = ΣΔHͦf (product) + ΣΔHͦf (reactant)
= -120.9 – (-322.12)
= +201.22 KJ/mol
.
Is HBr and H2O a Buffer solution
The reaction of HBr and H2O is not a buffer solution. Strong acids completely dissociate in the solution, so they cannot be used as a buffer.
Is HBr and H2O a complete reaction
The reaction between HBr and H2O is a complete reaction. One mole of strong acid dissociates in water to yield one mole of H3O+ and one mole of its conjugate base.
Is HBr and H2O an Exothermic or Endothermic reaction
The reaction of HBr and H2O is an endothermic reaction because the standard reaction enthalpy is positive as heat is absorbed in the reaction.
Is HBr and H2O a Redox reaction
The reaction of HBr and H2O is not a redox reaction as the oxidation state of H and Br remains unchanged during the reaction.
Is HBr and H2O a Precipitation reaction
The reaction of HBr and H2O is not a precipitation reaction as no solid products are formed during reaction.
Is HBr and H2O a Reversible or Irreversible reaction
The reaction of HBr and H2O is an irreversible reaction because Hydrobromic acid is a strong acid that completely dissociates into the water, the reaction is not considered to be in an equilibrium state.
Is HBr and H2O a Displacement reaction
The reaction of HBr and H2O is not a displacement reaction because HBr dissociates in H2O to give H3O+ and Br–.
Conclusion
HBr acts as an acid because it has lost a proton to form the bromide ion, Br–. A proton has been added to water to create the hydronium ion, H3O+, and thus water acts as the base. An anion and a cation are produced when a strong acid dissociates in water, and the reaction is irreversible.
Hi…My name is Zalak Chavda. I received my master’s degree in Chemistry.
Internships with ONGC, NPCIL &IFFCO companies taught me lab techniques and provided me with valuable industry knowledge. My writing aims to broaden my understanding of chemistry.
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