Assertion (A): Chlorobenzene is not formed in the reaction of phenol with thionyl chloride. Reason (R): In phenol, carbon-oxygen bond has partial double bond character.
Assertion (A): Chlorobenzene is not formed in the reaction of phenol with thionyl chloride. Reason (R): In phenol, carbon-oxygen bond has partial double bond character.
Show Hint
Phenol's C-O bond is strengthened by resonance, making it resistant to nucleophilic substitution.
- (A) and (R) are correct. (R) is the correct explanation of (A)
- (A) and (R) are correct, but (R) is not the correct explanation of (A)
- (A) is correct but (R) is not correct
- (A) is not correct but (R) is correct
The Correct Option is A
Solution and Explanation
Phenol does not react with SOCl\(_2\) because the C-O bond in phenol has partial double bond character due to resonance. This prevents the replacement of -OH with -Cl, unlike in aliphatic alcohols. Since resonance explains the non-reactivity, (R) correctly explains (A).
Top TS EAMCET Chemistry Questions
- A, B and C are three biomolecules. The results of the tests performed on them are given below :A, B and C are respectively :
Molisch's lest Barfoed Test Biuret Test A Positive Negative Negativde B Positive Positive Negative C Negative Negative Positive - 1 mole of $H_2$ and 2 moles of $I_2$ are taken initially in a 2 litre vessel. The number of moles of $H_2$ at equilibrium is 0.2. Then the number of moles of $I_2$ and HI at equilibrium is
- The pH of a buffer containing equal molarconcentration of a weak base and its chloride ( $K_b$ for weak base = $2 \times 10^{-5}$, log 2 = 0.3) is
- Atomic radius (pm) of Al, Si, N and F respectively is
- Consider the following electrode process of a cell, $ {Cl^{-1} -> \frac{1}{2} Cl_2 + e^{-}}$ $ {[MCl + e^{-} -> M + Cl^{-} ] }$ If EMF of this cell is $-1.140\, V$ and $E^0$ value of the cell is $-0.55\,V$ at $298\,K$, the value of the equilibrium constant of the sparingly soluble salt MCl is in the order of
Top TS EAMCET introduction to organic chemistry Questions
The following molecule with the structure acts as
- Which of the following is least reactive towards Sn1 reactions?
The common name of benzene -1, 3- diol is
Arrange the following in the correct order of their reactivity towards nucleophilic addition reactions
R is one of the monomers for the formation of a polymer called
Top TS EAMCET Questions
- A bag contains $5$ red balls, $3$ black balls and $4$ white balls are drawn at random. The probability that they are not of same colour is
- If $cosec\, \theta - \cot \theta = 2017$, then quadrant in which $\theta $ lies is
- If $a$ is a unit vector, then $| a \times \hat{ i }|^{2}+| a \times \hat{ j }|^{2}+| a \times \hat{ k }|^{2}=$
- $A$ straight line makes an intercept on the $Y$-axis twice as long as that on $X$-axis and is at a unit distance from the origin. Then the line is represented by the equations
- Let $S$ and $S'$ be the foci of an ellipse and B be one end of its minor axis. If $SBS'$ is an isosceles right angled triangle then the eccentricity of the ellipse is