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    Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.

    Click here👆to get an answer to your question ✍️ Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.

    Question

    Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.

    A

    True

    B

    False

    Medium Open in App Solution Verified by Toppr

    Correct option is A)

    Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.

    The  +I effect of methyl group makes methyl amine  more basic than water. Methyl amine reacts with water to produce hydroxide ions.

    CH 3 ​ −NH 2 ​ +H 2 ​ O→CH 3 ​ −NH 3 + ​ +OH −

    Hydroxide ions react with ferric chloride to precipitate hydrated ferric oxide (  Fe

    2 ​ O 3 ​ ⋅3H 2 ​ O). 2FeCl 3 ​ +6OH − →Fe 2 ​ O 3 ​ ⋅3H 2 ​ O+6Cl −

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    i Methylamine in water reacts with ferric chloride to precipitate

    i Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide. ii Although amino group is o– and p– directing in aromatic electrophilic substitution reactions aniline on nitration gives a substantial amount of m-nitroaniline.

    Question :

    i Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide. ii Although amino group is o– and p– directing in aromatic electrophilic substitution reactions aniline on nitration gives a substantial amount of m-nitroaniline.

    Answer :

    i Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide:Due to the +I effect of −CH3 group methylamine is more basic than water. Therefore in water methylamine produces OH− ions by accepting H+ ions from water. Ferric chloride FeCl3 dissociates in water to form Fe3+ and Cl− ions.Then OH− ion reacts with Fe3+ ion to form a precipitate of hydrated ferric oxide. ii Although amino group is o p− directing in aromatic electrophilic substitution reactions aniline on nitration gives a substantial amount of m-nitroaniline: Nitration is carried out in an acidic medium. In an acidic medium aniline is protonated to give anilinium ion which is meta-directing. For this reason aniline on nitration gives a substantial amount of m-nitroaniline.

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