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The increasing order of pKb values of the following compounds is:
  • a)
    II < iv="" />< iii="" />< />
  • b)
    I < ii="" />< iv="" />< />
  • c)
    II < i="" />< iii="" />< />
  • d)
    I < ii="" />< iii="" />< />
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The increasing order of pKb values of the following compounds is:a)II...
- OCH3 group increases electron density of ring at o- and p- position making (I) most basic. (Ill) is least basic due to -I effect of -CN group at meta position.
Since, -I effect of-CN > -I effect of -OH group.
Hence, correct basic strength will follow the order
I > II > IV > III
Order of Kb value is, I < ii="" />< iv="" />< />
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The increasing order of pKb values of the following compounds is:a)II b)I c)II d)I Correct answer is option 'B'. Can you explain this answer?
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