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pK(b) of aniline is more than that of me...

`pK_(b)` of aniline is more than that of methylamine. Why?

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To understand why the \( pK_b \) of aniline is more than that of methylamine, we need to analyze the basicity of both compounds. Basicity refers to the ability of a compound to accept protons (H⁺ ions), and it is often measured by the base dissociation constant (\( K_b \)). ### Step 1: Understand the Structures of Aniline and Methylamine - **Aniline (C₆H₅NH₂)**: Aniline consists of a benzene ring attached to an amino group (-NH₂). The structure can be represented as: \[ \text{C}_6\text{H}_5\text{NH}_2 \] - **Methylamine (CH₃NH₂)**: Methylamine is a simple amine with a methyl group attached to the amino group. Its structure is: ...
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Account for the following : pK_(b) of aniline is more than that of methylamine.

Account for the following: (i) pK_(b) of aniline is more than that of methylamine. (ii) Ethylamine is soluble in water whereas aniline is not. (iii) Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide. (iv) Although amino group is o– and p– directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline. (v) Aniline does not undergo Friedel-Crafts reaction. (vi) Diazonium salts of aromatic amines are more stable than those of aliphatic amines. (vii) Gabriel phthalimide synthesis is preferred for synthesising primary amines.

Knowledge Check

  • Aniline is more basic than

    A
    `NH_(3)`
    B
    `CH_(3)NH_(2)`
    C
    N-Methyl aniline
    D
    P-nitroaniline

    • Similar Questions

    Explore conceptually related problems

    Account for the following: (i) pK_(a) of aniline is more than that of methylamine. (ii) Ethylamine is soluble I water whereas aniline is not. (iii) Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide. (iv) Although amino group is o, p-directing in aromatic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline. (v) Aniline does not undergo Friedel-Crafts reaction. (vi) Diazonium salts of aromatic amines are more stable than those of aliphatic amines.

    Account for the following observations : (i) pK_(b) for aniline is more than that for methylamine. (ii) Methylamine solution in water reacts with ferric chloride solution to give a precipitate of ferric hydroxide. (iii) Aniline does not undergo Friedel-Crafts reaction.

    Account for the following : (i) pK_b of aniline is more than that of methylamine . (ii) Ethylamine is soluble in water, whereas aniline is not. (iii) Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide . (iv) Although amino group is o- and p-directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline. (v) Aniline does not undergo Friedel-Crafts reaction.

    Account for the following observations : (i) PK_(b) for aniline is more than that for methylamine. (ii) Methylamine solution in water reacts with ferric chloride solution to give a precipitate of ferric hydroxide. (iii) Aniline does not undergo Friedel Crafts reaction.

    State reasons for the following : (i) pK_(b) value for aniline is more than that for methylamine. (ii) Ethylamine is soluble in water whereas aniline is not soluble in water. (iii) Primary amines have higher boiling points than tertiary amines.

    Aniline is less/more basic than ethylamine.

    K_(b) of p-methylaniline is more / less than aniline.

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