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Which of the following order is correct ...

Which of the following order is correct regarding acidic character of hydrocarbons given below?
I. `CH-=CH gt CH_(2) gt CH_(3)-CH_(3)`
II. `HC-=CH gt CH_(3)C-= CH gt gt CH_(3)C-=C CH_(3)`

A

Only I

B

Only II

C

Both I and II

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
Both are correct. In (i) 1s-character defines correct trend to acidic strength as acidic strength `prop %` s-character
In (ii) inductive effect defines acidic strength and polarity of C-H bond of alkyne. Group having +l- effect increases electron density around C-H bond hence decreases polarity and acidic strength of alkyne.
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What is the kind of isomerism exhibited by the compounds given below? CH_(3)-C-=C-CH_(2)-CH_(2)-CH_(3) CH_(3)-CH_(2)-C-=C-CH_(2)-CH_(3)

Which of the following would you predict to be the stronger acid? (a) Benzoic acid or para-nitrobenzoic acid (b) CH_(3)-CH_(2)-CH_(2)-OH or CH_(3)-CH=CH-OH (c) CH_(3)-CH=CH-CH_(2)-OH or CH_(3)-CH=CH-OH .

The correct increasing order of acidity of the following alkynes is : (1) CH_(3) - C -= C - CH_(3) (2) CH_(3) - C -= CH (3) CH -= CH

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