Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Order of acidic nature of the following compounds is A> B > C.
Reason R: Fluoro is a stronger electron withdrawing group than Chloro group.
In the light of the above statements, choose the correct answer from the options given below:
Select the correct option:
A
A is false but R is true.
B
Both A and R are correct and R is the correct explanation of A.
C
Both A and R are correct but R is NOT the correct explanation of A.
D
A is true but R is false
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Sol. Acidic strength $\alpha-$ I effect
$$
\alpha \frac{1}{+1} \text { effect }
$$
F, Cl exerts -I effect, Methyl exerts +1 effect, C is least acidic.
Among $A$ and $B$; since inductive effect is distance dependent, Extent of $-I$ effect is higher in $A$ followed by $B$ even though $F$ is stronger electron withdrawing group than $C l$. Thus, $A$ is more acidic than $B$.
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