15 Facts on HBr +K2SO4: What, How to Balance & FAQs

Dipotassium sulfate is an inorganic potassium salt. Let us see a few facts on HBr + K₂SO₄.

Hydrogen bromide (HBr) has a molar mass of 80.91g/mol, and its density is 1.49 g/cm3. It has one heavy atom count and one covalently bonded unit. Potassium sulfate (K₂SO₄) has a molecular weight of 174.26, and its topological Polar surface area is 88.6 Ų

Let us discuss the reaction type, balancing of the reaction, and their enthalpies along with the net ionic equation in this article.

What is the product of HBr and K₂SO₄?

HBr and K₂SO₄ have the following products. Potassium Bromide (KBr), Sulfur dioxide (SO₂) gas water (H₂O) and oxygen (O₂) gas.

2K₂SO₄ + 4HBr → 4 KBr + 2 H₂O + 2SO₂ + O₂

What type of reaction is HBr + K₂SO₄?

The reaction between HBr Plus K₂SO₄ is a redox reaction. Since acid is used, heat is also liberated, therefore, exothermic reaction.

How to balance HBr + K₂SO₄?

This reaction between HBr + K₂SO₄ is not balanced because the number of molecules on the left-hand side and right-hand side are not unequal. 

K₂SO₄ + HBr → KBr + SO₂ + O₂

• In the first step, we have to assign the coefficients to every molecule in the reaction. We assign P, Q, R, S, T and U because we have six molecules. The reaction will look like this,
• P K₂SO₄ + Q HBr → R KBr + S SO₂ + U H₂O + T O₂ 
•  For reactants and products, we label their coefficients.
• K = P+ R, S=P + S, O= 4P + 2S + 2T + U, H = 2U+Q, Br= Q + R .
• The gaussian elimination method is used for calculating coefficient values.
• P=2, Q=4, R=4, S=2, T=2, U= 2
• So, the balanced equivalence of the reaction is,
• 2K₂SO₄ + 4HBr → 4 KBr + 2 H₂O + 2SO₂ + O₂

HBr + K₂SO₄ titration?

The reaction between HBr and K₂SO₄ titration does not occur because it is a very vigorous acid with a pKa value of -9 and, therefore, cannot be used for titration.

HBr + K₂SO₄ net ionic equation?

• HBr and K₂SO₄ have the following Ionic equation
• 4 K¹⁺ + 2 SO₄^2- + 4 H⁺ + 4 Br^1- → 4 K¹⁺ + 2 SO₂^2- + 4 Br^1- + 4H⁺ + 2O^2-
•  To arrive at the net ionic equation, we should follow these steps.
• The balanced chemical equation represents the states of products and reactants. 
• 2K₂SO₄ (aq) + 4HBr (aq) → 4 KBr (aq) + 2 H₂O (aq) + 2SO₂ (g) + O₂ (g)
• Acids, bases, and salts get dissociated into their respective ions, whereas pure substances cannot dissociate into ions.
• So, the final equation of dissociation is 
• 4 K¹⁺ + 2 SO₄^2- + 4 H⁺ + 4 Br^1- → 4 K¹⁺ + 2 SO₂^2- + 4 Br^1- + 4H⁺ + 2O^2-

HBr + K₂SO₄ conjugate pairs?

HBr + K₂SO₄ has the following conjugate pairs,

• HBr has conjugate acid-base pair. Br^– is the conjugate base, and H₃O⁺ is its conjugate acid. 
• K₂SO₄ has no conjugate acid-base pair.

HBr + K₂SO₄ intermolecular forces?

The reaction between HBr and K₂SO₄ has the following intermolecular forces,

• HBr has Dipole-dipole forces.
•  K₂SO₄ has Ionic forces.

HBr + K₂SO₄ reaction enthalpy?

HBr + K₂SO₄ reaction, their enthalpy has not been recognized because of stochiometric reasons.

Is HBr + K₂SO₄ a buffer solution?

HBr + K₂SO₄ as a buffer is not possible as HBr is used. Resilient acid will not produce a buffer solution.

Is HBr + K₂SO₄ a complete reaction?

HBr + K₂SO₄ is a complete reaction with Potassium Bromide (KBr), Sulfur dioxide (SO₂) gas water (H₂O) and oxygen (O₂) gas as their products.

2 K₂SO₄ + 4 HBr → 4 KBr + 2 H₂O + 2SO₂ + O₂

Is HBr + K₂SO₄ an exothermic or endothermic reaction?

HBr + K₂SO₄ is an Exothermic reaction because heat is liberated.

Is HBr + K₂SO₄ a redox reaction?

HBr + K₂SO₄ is a redox reaction because there is a change in the oxidation state of S ⁺⁶ to S ⁺⁴ (S is reduced), and O is oxidized from O^-2 to O⁰.

Is HBr + K₂SO₄ a precipitation reaction?

HBr + K₂SO₄ is a precipitation reaction KBr is obtained as a residue.

Is HBr + K₂SO₄ reversible or irreversible reaction?

HBr + K₂SO₄ is the irreversible reaction because gaseous products like O₂ and SO₂ are liberated.

Is HBr + K₂SO₄ displacement reaction?

HBr + K₂SO₄ is not a displacement reaction as no products are displaced here.

Conclusion

In conclusion, the reaction between HBr and K₂SO₄ is an irreversible reaction. A buffer solution is not formed, and its reaction enthalpy has not been proven yet. K₂SO₄ plays an important role in fertilizers for crops. HBr is used as source for bromine in industrial applications.