Consider the following sulphur based oxoacids.
\(H_2SO_3,H_2SO_4,H_2S_2O_8 \)and \(H_2S_2O_7\)
Amongst these oxoacids, the number of those with peroxo (O–O) bonds is_____.
\(H_2SO_3,H_2SO_4,H_2S_2O_8 \)and \(H_2S_2O_7\)
Amongst these oxoacids, the number of those with peroxo (O–O) bonds is_____.
Correct Answer: 1
Approach Solution - 1
To determine which of the given sulphur-based oxoacids contain peroxo (O–O) bonds, we must analyze their structural formulas:
- \(H_2SO_3\) (Sulfurous acid): This compound has the structure where sulfur is bonded to three oxygen atoms with single and double bonds, but no O–O bond is present.
- \(H_2SO_4\) (Sulfuric acid): Sulfur forms double bonds with two oxygen atoms and single bonds with two hydroxyl groups. There is no O–O bond.
- \(H_2S_2O_8\) (Peroxodisulfuric acid or Marshall's acid): This compound contains an O–O single bond. Its structural formula includes a direct O–O linkage, characteristic of peroxo bonds.
- \(H_2S_2O_7\) (Pyrosulfuric acid): Also known as oleum, it does not contain an O–O bond; instead, sulfur atoms are linked through an oxygen atom but not forming any O–O linkage.
From the analysis, only \(H_2S_2O_8\) has a peroxo bond.
Thus, the number of oxoacids with peroxo bonds is 1. This matches the given range of (1,1).
Approach Solution -2
So, the answer is 1.
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Concepts Used:
Chemical Bonding and Molecular Structure
Such a group of atoms is called a molecule. Obviously, there must be some force that holds these constituent atoms together in the molecules. The attractive force which holds various constituents (atoms, ions, etc.) together in different chemical species is called a chemical bond.
Types of Chemical Bonds:
There are 4 types of chemical bonds which are formed by atoms or molecules to yield compounds.
- Ionic Bonds - Ionic bonding is a type of chemical bonding which involves a transfer of electrons from one atom or molecule to another.
- Covalent Bonds - Compounds that contain carbon commonly exhibit this type of chemical bonding.
- Hydrogen Bonds - It is a type of polar covalent bonding between oxygen and hydrogen wherein the hydrogen develops a partial positive charge
- Polar Bonds - In Polar Covalent chemical bonding, electrons are shared unequally since the more electronegative atom pulls the electron pair closer to itself and away from the less electronegative atom.
Factors Affecting Bond Enthalpy in Chemical Bonding:
- Size of the Atom
- Multiplicity of Bonds
- Number of Lone Pair of Electrons Present
- Bond Angle