Payal posted an Question
August 14, 2020 • 20:22 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Jh ) ,nh och nh -och3 (lo) cc)

What is the order of basic character of substituted aniline? please explain

2 Answer(s) Answer Now
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    Dinesh khalmaniya 1

    correct order is C>A>D>B

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    reference https://books.google.co.in/books?id=RrKgfuRwsqsC&pg=PA142&dq=basicity+order+of+methoxy+aniline&hl=en&sa=X&ved=0ahUKEwisgqLhwJrrAhXHTX0KHWuMBTQQ6AEIPTAD#v=onepage&q=basicity%20order%20of%20methoxy%20aniline&f=false

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    I'm sending a screenshot of this book please check it.

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    this is absolutely correct order

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    Dinesh khalmaniya 1 best-answer

    Explaination-

    cropped8375714671581418724.jpg
    cropped7428487820679439915.jpg
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    here Ortho effect is not working so order will depend only on resonance and inductive effect

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    check the above explaination and also check the data given. sometimes there are exceptions also so you need to remember order of such examples

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    got it??

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    yes sir, thank you

  • comment-profile-img>
    Priyanshu kumar

    Para methoxy aniline is most basic among these due to +M effect and -I effect of OCh3 group but at para position resonance effect is more pronounced so it increases electron density...so most basic

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    M-Anisidine is least basic due to only -I effect of OCH3 group at meta position

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    At ortho position resonance effect and inductive effect occurs but due to ortho effect its basicity decreases

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    Got this meghna??

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    yes

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    thank you

  • comment-profile-img>
    Priyanshu kumar Best Answer

    Order should be C>D>A>B

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    check the pkb values meghna....

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    Meghna these are complex situations...

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