Homework Help
Homework Help
View Details
Assignment Help
Assignment Help
View Details
Online Tutoring
Online Tutoring
View Details
Home » Chemistry Homework Help » Organic Chemistsry » Halogens Oxoacids
Halogens Oxoacids
Fluorine yields only one oxyacid, hypofluorous acid (HOF). Chlorine, bromine and iodine form four series of acids with formulae: HOX, HXO2, HXO3 and HXO4, although many of these are known only in solutions or as salts.
   
The Hypohalous acids HOCl, HOBr and HOI are weak acids and are only formed in aqueous solutions by disproportionation of the halogen of the halogen water

X2 + H2O HOX + HX (X = Cl, Br, I)

Salts of these acids are known as hypohalites, e.g. bleaching powder, CaOCl2 is a common example of this category.
   
The halic acids HClO3 and HBrO3 are also known as solutions, but iodic acid HIO3 exists as a white solid. Thus, the stability of acids increases with increase in atomic number of the halogen. These acids act as strong oxidizing agents, e.g. these oxidize halides to give halogens in acid medium.

OX3- + 5X- + 6H+ 3X2 + 3H2O

The salts of these are called halates. Amongst the halates, sodium chlorate (NaClO3) and potassium chlorate (KClO3) are prepared on industrial scale. It is also known as ‘Berthelot salt’. NaClO3 is a powerful weed killer, whilst KClO3 is used in fireworks and matches.
   
Perhalic acid i.e. perchloric, periodic acids as well as their salts perchlorates and periodates are known to exist. The perhalates (MXO4) are prepared by the electrolytic oxidation of the corresponding halates, MXO3.

4ClO3- Cl- + 3ClO4-

The disproportionation of BrO3- to BrO4- is unfavorable, therefore per bromates are obtained only by oxidation of BrO3- by F2 in basic solution.

BrO3- + F2 + 2OH- BrO4- + 2F- + H2O

Acidic character of oxyacids: the variation in the acidic character of the halogen acids in different oxidation states are summarized below:
   
The acid strength of oxyacid of the same halogen increases with the increase in oxidation number of the halogen. For example, among the different oxyacids of chlorine the acidic character follows the order

HOCl < HClO2 < HClO3 < HClO4

Reason: the acid strength can be explained on the basis Lowry-Bronsted concept that conjucate base of weak and is strong and conjugate base of strong acid is weaker.

Services:- Halogens Oxoacids Homework | Halogens Oxoacids Homework Help | Halogens Oxoacids Homework Help Services | Live Halogens Oxoacids Homework Help | Halogens Oxoacids Homework Tutors | Online Halogens Oxoacids Homework Help | Halogens Oxoacids Tutors | Online Halogens Oxoacids Tutors | Halogens Oxoacids Homework Services | Halogens Oxoacids

Submit Your Query ???
Topics
Activation Energy Average Rate Determination Rate Equation Value Reactions Collision Theory Reactions Temperature Effect Half Life Of Reaction Integrated Rate Equation Rate Equation Expression Reaction Mechanism Pseudo First Order Reaction Rate Equation Law Chemical Reaction Rate Additional Compounds Co-ordination Compounds Coordination Compounds Bonding Coordination Compounds Colors Octahedral Complex Splitting Tetrahedral Complex Splitting Stabilization Energy Crystal Field Theory Stability Affecting Factors Isomerism In Compounds Magnetic Properties Metal Carbonyls D-orbitals Orientation Mononuclear Compounds Naming Coordination Compounds Stability Terminology Compounds Werner Theory First Row Transition Elements Elements Electric Configuration F-block Elements Halides And Sulphides Metals-Oxides, Oxoanions Potassium Dichromate Potassium Permanganate The Actinoids The Lanthanoids Cell Potential Concentration Cells Electrolytic Solution Conductance Corrosion Gibbs Energy Electrochemical Series Rusting Electrochemical Theory Electrode Potential Electrolytic Cells Fuel Cells Galvanic Cells Electrode Potential Measurement Nerst Equation Corrosion Prevention Primary Cells Redox Reactions Salt Bridge Secondary Cells Standard Hydrogen Electrode Electrodes Types Steel Production Process Metals Extraction Metallurgy Principles Conduction In Insulators Conduction In Metals Density Of Unit Cell Solids-Electrical Properties Solids-Magnetic Properties Non Stoichiometric Defects Stoichiometric Defects Azeotropes Solutions-Colligative Properties Degree Of Association Degree Of Dissociation Depression In Freezing Point Elevation In Boiling Point Henry Law Constant Ideal Solutions Isotonic, Hypotonic Solutions Osmotic Pressure-Molar Mass Non Ideal Solutions Osmosis Solid In Liquid Solution Vapour Pressure Lowering Solubility Of Gases Solids In Liquids Solubility Types Of Solutions Liquid Solutions Pressure Adsorption Adsorption-Gases On Solids Adsorption From Solution Adsorption Applications Catalysis Chemical Adsorption Colloidal Solutions Coagulation Colloidal State Adsorption, Absorption Difference Emulsions Enzyme Catalysis Gels Heterogeneous Catalysis Homogeneous Catalysis Physical Adsorption Colloidal Solution Purification Group 15 Elements Group 16 Elements Dioxygen Chemical Reactions Dinitrogen Dioxygen The Oxygen Family Halides And Oxides Hydrogen Chloride Interhalogen Compounds Halogens Oxoacids Phosphorus Trichloride Nitric Acid Properties The Noble Gases Alcohols And Phenols C-O Bond Cleavage Phenol Preparation Ethers Alcohols General Preparation Alcohols Industrial Preparation Nomenclature Alcohols Physical Properties Phenols Preparation Phenolic Group Reactions Alkyl Group Reactions Some Commercial Alcohols Chemicals In Food Cleansing Action Of Soaps Drug Target Interaction Drugs And Medicines Non-Soapy Detergents Soaps Types Of Drugs Haloalkanes Chemical Properties Halides, Aryl Halides Haloalkanes And Halorenes Nucleophilic Substitution Halides Nomenclature Haloalkanes Physical Properties Haloarenes Physical Properties Polyhalogen Compounds Haloalkanes From Alcohols Haloalkanes From Hydrocarbons Cannizzaro Reaction Carboxylic Acid Preparation Of Acids Oxidation In Aldehydes Aldehydes, Ketones Properties Carboxylic Acid Properties Aldehydes, Ketones Preparation -COOH Group Reactions -OH Group Replacement Aldehydes, Ketones Reduction Carbonyl Oxygen Atom Commercial Carbonyl Compounds Commercial Carboxylic Acids Amines Amines Character Amines Chemical Properties Cyanides, Isocyanides Diazonium Salts Amines Types Aliphatic Amines Nomenclature Ortho Effect Amines Physical Properties Preparation Of Amines Diazonium Salts Properties Amines With Nitrous Acid Amines With Aldehydes Amines-Structure Basicity Biodegradable Polymers Polymerization Mode Polymers-Molecular Forces Polymers-Molecular Mass Natural, Synthetic Polymers Natural Rubber Polymers Condensation Polymers Polydienes Preparation Polyhallolefins Preparation Structure Based Polymers Synthetic Rubber