Bromic Acid Formula – Structure, Properties, Uses, Sample Questions

Hydrogen (H) has unique kind properties that are not like some other component on our planet, close to 66% of our Universe’s mass is made out of this unique component. It is both electropositive as well as electronegative, as it structures hydrogen particle H+ as well as hydride particle H – Hydrogen compounds are the main oxidants for some synthetic substances in the air and are associated with the patterns of numerous substance families. Hydrogen is utilized to make ammonia (NH₃). Br is the compound name of Bromine and is essential to the periodic table. The bromine substance Br₂ is a rosy earthy colored fluid natural liquid and is never ordinarily found in its basic design yet rather in inorganic mixtures called bromides and in organo-bromine compounds. These are ordinarily found in soils, salts, air, and seawater.

Oxygen is a colorless, odorless gas. The atomic number of oxygen in the periodic table is 8. It is a life-supporting component of the air. It constitutes 21% of the earth’s atmosphere.

Bromic Acid

The chemical formula of Bromic Acid is HBrO₃. It is also known as Hydrogen bromate or Bromic (V) acid. It is an oxoacid and exists only in an aqueous solution. It is a colorless solution. During its decomposition to bromine at room temperature, the color of the solution changes yellow. It is a powerful oxidizing agent. Bromic acid can be prepared by the reaction of barium bromate (Ba(BrO₃)₂) and sulfuric acid (H₂SO₄). Barium sulfate obtained is a precipitate form. Therefore bromic acid can be decanted by removing the precipitated barium sulfate.

Bromic Acid Formula

The chemical formula of Bromic acid is HBrO₃.

Bromic Acid Structure

HBrO₃ is the most stable isomer.

Physical Properties Of Bromic Acid

• The Molecular weight of Bromic acid is  128.91 g/mol.
• It has a Conjugate base is Bromate.
• The pKa of this acid is −2.
• The Complexity is 46.2.

Chemical Properties of Bromic acid

• Bromic acid can  be obtained by the passage of chlorine through bromine water:

5Cl₂ + Br₂ + 6H₂O ⇢ 2HBrO₃ + 10HCl.

• Bromic acid salts are stable under ordinary conditions. But upon heating they decompose, and release the oxygen:

2KBrO₃ ⇢ 2KBr + 3O₂.

• Bromates are obtained by electrochemical oxidation of the corresponding bromides. In the acidic solutions, bromic acid and its salts exhibit strong oxidizing properties, reducing to the ion of  Br^– or to free bromine. 

Uses of Bromic acid

• Bromic acid is useful for making bromates. They are used for the production of inorganic bromides like zinc, calcium, and sodium. 
• It can also be used as a reagent for generating organobromine compounds.
• It is also used for the catalyzes of alkylation reactions and the extraction of certain ores.
• It is able to release oxygen-free radicals from the water in mucous membranes. 

Sample Questions

Question 1: What type of acid is Bromic acid?

Answer: 

Bromic acid is a bromine oxoacid. It is a conjugate acid of a bromate. During its decomposition to bromine at room temperature, the colour of the solution changes yellow. It  is a powerful oxidizing agent.

Question 2: Calculate the molecular weight of Bromic Acid.

Answer: 

Formula of Bromic Acid is: HBrO₃

Its molecular weight will be:

= 1.00794 + 79.904 + 3 × 15.999

= 128.909 gram per mole.

Question 3: What happens when bromic acid reacts with zinc?

Answer: 

When bromic acid reacts with zinc then it forms zinc bromide and releases hydrogen gas and O₃. This is the example of Displacement reaction here displacement reaction take place because zinc (Zn) is more reactive than hydrogen.

2HBrO₃ + Zn ⇢ ZnBr₂ + H₂ + 2O₃

Question 4: Is bromic acid soluble in water?

Answer: 

Bromic acid is soluble in water, gives Hydrobromic acid releasing hydrogen and oxygen gas.

HBrO₃ + H₂O ⇒ HBr + H₂ + 2O₂.

Question 5: What are the effects of Bromic acid?

Answer:

Bromic acid causes eye and skin burns. It causes digestive and respiratory tract burns. It may also be fatal if inhaled or swallowed.

Question 6: What is the mass of bromic acid (HBrO₃) which reacts with excess HBr to produce 25.67g of b Bromine that is 74.2% effective? 

Answer: 

HBrO₃ + 5HBr ⇢ 3Br₂ + 3H₂O

1 mol HBrO₃ reacts with 5 HBr to produce 3 mol Br₂.

Molar mass Br₂ = 79.9 g/mol × 2 = 159.8 g /mol.

Mole of Br₂ in 25.67 g Br₂ = 25.67g / 159.8 g/mol = 0.1606.

Hence it will require,0.1606 mol / 3 = 0.0535 mol HBrO₃.

Molar mass HBrO₃ = 1+79.9 + (3×16) = 128.9 g/mol.

Mass of 0.0535 mol = 0.0535 mol ×128.9 g/mol = 6.896 g HBrO₃ required.

But, reaction has yield = 74.2%.

Mass of HBrO₃ requires 6.896 g ×100%/ 74.2% = 9.294 g HBrO₃ required.

Hence, 9.29 g HBrO₃ is required.

Question 7: What can we get barium bromate Ba(BrO₃)₂) is treated with sulphuric acid H₂SO₄?

Answer: 

When barium bromate is treated with sulphuric acid, we get bromic acid and barium sulfate in precipitated form.

Ba(BrO₃)₂ + H₂SO₄ ⇢ 2HBrO₃ + BaSO₄.