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Hydrogen peroxide can be preapared by t...

Hydrogen peroxide can be preapared by the action of dil. `H_(2)SO_(4)` or `H_(3)PO_(4)` on barium peroxide or by bubbling peroxide . On an industrial scale, it can be prepared by hydrolysis of peroxodisulphuric acid obtained by electrolysis of 50% `H_(2)SO_(4)` or an equimolar mixture of `H_(2)SO_(4)` and ammonium sulphate . The strength of `H_(2)O_(2)` solution can be expressed in a number of ways namely normality , molarity , percentage strength and volume strength . Volume strength refers to the volume of `O_(2)` produced at N.T.P. by decomposition of 1 mL of `H_(2)O_(2)` solution. `H_(2)O_(2)` acts as an oxidising as well as reducing agent both in acidic and basic media.
The correct increasing order of the acidity of `CO_(2), H_(2)O and H_(2)O_(2)` is

A

`CO_(2) lt H_(2)O_(2) lt H_(2)O`

B

`H_(2)Olt H_(2)O_(2) lt CO_(2)`

C

`H_(2)O lt H_(2)O_(2) gt CO_(2)`

D

`H_(2)O_(2) gt CO_(2) gt H_(2)O`

Text Solution

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The correct Answer is:
To determine the increasing order of acidity for CO₂, H₂O, and H₂O₂, we can analyze the acidic properties of each compound step by step. ### Step 1: Understanding the Compounds - **CO₂ (Carbon Dioxide)**: When CO₂ dissolves in water, it forms carbonic acid (H₂CO₃), which is a weak acid. This indicates that CO₂ can contribute to acidity when in solution. - **H₂O (Water)**: Water is amphoteric, meaning it can act as both an acid and a base. However, it is generally considered neutral and has a very weak acidic nature. - **H₂O₂ (Hydrogen Peroxide)**: Hydrogen peroxide is also a weak acid, but it is less acidic than carbonic acid. ### Step 2: Comparing Acidity - **CO₂**: Forms carbonic acid in solution, which is more acidic than water and hydrogen peroxide. - **H₂O₂**: Acts as a weak acid but is less acidic than carbonic acid. It is more acidic than water. - **H₂O**: Generally neutral and has the least acidic character among the three. ### Step 3: Establishing the Order From the analysis: - CO₂ is the most acidic because it forms carbonic acid. - H₂O₂ is more acidic than H₂O but less acidic than CO₂. - H₂O is the least acidic. ### Conclusion Thus, the correct increasing order of acidity is: **H₂O < H₂O₂ < CO₂**
To determine the increasing order of acidity for CO₂, H₂O, and H₂O₂, we can analyze the acidic properties of each compound step by step. ### Step 1: Understanding the Compounds - **CO₂ (Carbon Dioxide)**: When CO₂ dissolves in water, it forms carbonic acid (H₂CO₃), which is a weak acid. This indicates that CO₂ can contribute to acidity when in solution. - **H₂O (Water)**: Water is amphoteric, meaning it can act as both an acid and a base. However, it is generally considered neutral and has a very weak acidic nature. - **H₂O₂ (Hydrogen Peroxide)**: Hydrogen peroxide is also a weak acid, but it is less acidic than carbonic acid. ### Step 2: Comparing Acidity ...
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Hydrogen peroxide can be prepared by the action of dil. H_(2)SO_(4) or H_(3)PO_(4) on barium peroxide or by bubbling carbon dioxide through a thin paste of barium peroxide. On an industrial scale , it can be prepared by hydrolysis of peroxodisulphuric acid obtained by electrolysis of 50% H_(2)SO_(4) or an equimolar mixture of H_(2)SO_(4) and ammonium sulphate .The strength of H_(2)O_(2) solution can be expressed in a number ways namely normality , molarity , percentage strength and volume of O_(2) produced at N.T.P by decomposition of 1 mL of H_(2)O_(2) acts as an oxidising as well a reducing agent both in acidic and basic media. Hydrogen peroxide is used as

Knowledge Check

  • Hydrogen peroxide can be preapared by the action of dil. H_(2)SO_(4) or H_(3)PO_(4) on barium peroxide or by bubbling peroxide . On an industrial scale, it can be prepared by hydrolysis of peroxodisulphuric acid obtained by electrolysis of 50% H_(2)SO_(4) or an equimolar mixture of H_(2)SO_(4) and ammonium sulphate . The strength of H_(2)O_(2) solution can be expressed in a number of ways namely normality , molarity , percentage strength and volume strength . Volume strength refers to the volume of O_(2) produced at N.T.P. by decomposition of 1 mL of H_(2)O_(2) solution. H_(2)O_(2) acts as an oxidising as well as reducing agent both in acidic and basic media. 100 volume hydrogen peroxide solution means

    A
    17.86 N
    B
    30.36% `H_(2)O_(2)`
    C
    `8.93 M`
    D
    all are correct

  • Hydrogen peroxide can be preapared by the action of dil. H_(2)SO_(4) or H_(3)PO_(4) on barium peroxide or by bubbling peroxide . On an industrial scale, it can be prepared by hydrolysis of peroxodisulphuric acid obtained by electrolysis of 50% H_(2)SO_(4) or an equimolar mixture of H_(2)SO_(4) and ammonium sulphate . The strength of H_(2)O_(2) solution can be expressed in a number of ways namely normality , molarity , percentage strength and volume strength . Volume strength refers to the volume of O_(2) produced at N.T.P. by decomposition of 1 mL of H_(2)O_(2) solution. H_(2)O_(2) acts as an oxidising as well as reducing agent both in acidic and basic media. Which of the following substances on treatment with H_(2)O_(2) gives MnO_(2)

    A
    acidified `KMnO_(4)`
    B
    alkaline `KMnO_(4)`
    C
    alkaline `MnSO_(4)`
    D
    both (b) and (c)

  • Hydrogen peroxide can be preapared by the action of dil. H_(2)SO_(4) or H_(3)PO_(4) on barium peroxide or by bubbling peroxide . On an industrial scale, it can be prepared by hydrolysis of peroxodisulphuric acid obtained by electrolysis of 50% H_(2)SO_(4) or an equimolar mixture of H_(2)SO_(4) and ammonium sulphate . The strength of H_(2)O_(2) solution can be expressed in a number of ways namely normality , molarity , percentage strength and volume strength . Volume strength refers to the volume of O_(2) produced at N.T.P. by decomposition of 1 mL of H_(2)O_(2) solution. H_(2)O_(2) acts as an oxidising as well as reducing agent both in acidic and basic media. The volume of 10 volume H_(2)O_(2) solution that decolourises 200 mL of 2N KMnO_(4) solution in acidic medium is :

    A
    112 mL
    B
    336 mL
    C
    200 mL
    D
    224 mL