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Bromic acid

Chemical structure of bromic acid

Bromic acid is an inorganic compound with formula HBrO3.

Table of contents
  1. 1Names
  2. 2Formulae and structures
  3. 3Properties
  4. 4Constituents
  5. 5Thermodynamic properties
  6. 6Solubility
  7. 7Preparations
  8. 8Chemical reactions
  9. 9References
  10. 10Related substances
  11. 11Related categories

Names

List of substance names

Nomenclature
Name
Typical name
Bromic acid
Compositional nomenclature
Hydrogen bromate
Additive nomenclature
Hydroxidodioxidobromine
Hydrogen nomenclature
Hydrogen(trioxidobromate)

Formulae and structures

List of formulae

Formula name
Formula
Typical formula
HBrO3
Molecular formula
HBrO3
Compositional formula
HBrO3
Structural formula
Chemical structure of bromic acid
Structural formula with no lone pair
Chemical structure of bromic acid with no lone pair
Other structural formulas
Chemical structure of bromic acid with double bonds
Chemical structure of bromic acid with double bonds and no lone pair
Lewis structure
Lewis structure of bromic acid
Colored Lewis structure
Colored Lewis structure of bromic acid

Properties

List of substance properties

Item
Value
Name
Bromic acid
Formula
HBrO3
Appearance
Colorless aqueous solution
Odor
Pungent odor
Molar mass
128.909 g/mol
Density
Melting point
Boiling point

Constituents

Constituent atoms

AtomNameOxidation stateNumber
HHydrogen+11
BrBromine+51
OOxygen−23

Ratio of atoms

AtomAtomic weightNumberAtomic ratioWeight ratio
H1.008120.00%0.78%
Br79.904120.00%61.98%
O15.999360.00%37.23%
HBrOAtomic ratio
BrOWeight ratio

Thermodynamic properties

Phase transition properties

Item
Value
Enthalpy of fusion
Enthalpy of vaporization
Enthalpy of vaporization at 25°C
Enthalpy of other transition

Standard thermodynamic properties

State
Standard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
Ionized aqueous solution−67.07[1]18.60[1]161.71[1]

Solubility

Qualitative solubility

Reactive
Miscible
Very soluble
Soluble
Slightly soluble
Very slightly soluble
Insoluble

Preparations

Reaction of nonmetal and water

The reaction of bromine and water yields bromic acid and hydrogen bromide.

Reaction of bromine and water
ΔrG450.95 kJ/mol
K0.99 × 10−79
pK79.00

Chemical reactions

Electrolytic dissociation

Electrolytic dissociation of bromic acid yields hydrogen ion and bromate ion.

Electrolytic dissociation of bromic acid
HBrO3Bromic acid
H+Hydrogen ion + BrO3Bromate ion

Reaction with base

The reaction of bromic acid and base yields salt and water.

Reaction with basic oxide

The reaction of basic oxide and bromic acid yields salt and water.

Reaction with salt of weak acid

The reaction of salt of weak acid and bromic acid yields sodium bromate and weak acid.

Reaction with salt of volatile acid

The reaction of salt of volatile acid and bromic acid yields salt of non volatile acid and volatile acid.

Reaction with self-redoxing species

The reaction of self-redoxing species and bromic acid yields a variety of products.

Reaction with reducing species

The reaction of reducing species and bromic acid yields a variety of products.

Reaction of hydrogen and bromic acid
ΔrG−1544.0 kJ/mol
K3.14 × 10270
pK−270.50
Reaction of hydrogen and bromic acid
ΔrG−836.2 kJ/mol
K3.13 × 10146
pK−146.50
Reaction of hydrogen sulfide and bromic acid
ΔrG−1316.89 kJ/mol
K5.12 × 10230
pK−230.71
Reaction of manganese and bromic acid
ΔrG−1539.52 kJ/mol
K5.16 × 10269
pK−269.71
Reaction of manganese and bromic acid
ΔrG−1428.69 kJ/mol
K1.98 × 10250
pK−250.30

Reaction with oxidizable species

The reaction of oxidizable species and bromic acid yields a variety of products.

Reaction with oxidizable species under acidic condition

The reaction of oxidizable species, bromic acid, and hydrogen ion yields a variety of products.

Reaction of copper and bromic acid under acidic condition
ΔrG−1128.59 kJ/mol
K5.25 × 10197
pK−197.72
5CuCopper + 2HBrO3Bromic acid + 10H+Hydrogen ion
5Cu2+Copper(II) ion + Br2Bromine + 6H2OWater
Reaction of copper and bromic acid under acidic condition
ΔrG−956.24 kJ/mol
K3.36 × 10167
pK−167.53
10CuCopper + 2HBrO3Bromic acid + 10H+Hydrogen ion
10Cu+Copper(I) ion + Br2Bromine + 6H2OWater
Reaction of potassium iodide and bromic acid under acidic condition
ΔrG−858.24 kJ/mol
K2.28 × 10150
pK−150.36
10KIPotassium iodide + 2HBrO3Bromic acid + 10H+Hydrogen ion
10K+Potassium ion + 5I2Iodine + Br2Bromine + 6H2OWater
Reaction of potassium iodide and bromic acid under acidic condition
ΔrG−475.27 kJ/mol
K1.84 × 1083
pK−83.26
6KIPotassium iodide + HBrO3Bromic acid + 5H+Hydrogen ion
KBrPotassium bromide + 5K+Potassium ion + 3I2Iodine + 3H2OWater

Reaction with hardly oxidizable species

The reaction of hardly oxidizable species and bromic acid yields a variety of products.

Reaction with hardly oxidizable species under acidic condition

The reaction of hardly oxidizable species, bromic acid, and hydrogen ion yields a variety of products.

Reaction of sodium chloride and bromic acid under acidic condition
ΔrG−143.76 kJ/mol
K1.53 × 1025
pK−25.19
10NaClSodium chloride + 2HBrO3Bromic acid + 10H+Hydrogen ion
🔥
10Na+Sodium ion + 5Cl2Chlorine + Br2Bromine + 6H2OWater
Reaction of sodium chloride and bromic acid under acidic condition
ΔrG−46.56 kJ/mol
K1.44 × 108
pK−8.16
6NaClSodium chloride + HBrO3Bromic acid + 5H+Hydrogen ion
🔥
NaBrSodium bromide + 5Na+Sodium ion + 3Cl2Chlorine + 3H2OWater

Electrolysis of aqueous solution

Electrolysis of aqueous bromic acid yields a variety of products.

Electrolysis of aqueous bromic acid without water as reactant
ΔrG−33.27 kJ/mol
K6.74 × 105
pK−5.83
Electrolysis of aqueous bromic acid without water as reactant
ΔrG−540.80 kJ/mol
K5.55 × 1094
pK−94.74
Electrolysis of water
ΔrG474.258 kJ/mol
K0.82 × 10−83
pK83.09

Decomposition

Decomposition of bromic acid yields a variety of products.

Decomposition of bromic acid
ΔrG−33.27 kJ/mol
K6.74 × 105
pK−5.83
Decomposition of bromic acid
ΔrG−540.80 kJ/mol
K5.55 × 1094
pK−94.74

References

List of references

  1. 1
    Janiel J. Reed (1989)
    The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units
    National Institute of Standards and Technology (NIST)