Question
Write a note on acidity of phenols.

Answer

→ Acidity of phenols: The reactions of phenol with metals (e.g., sodium, aluminium) and sodium hydroxide indicate its acidic nature. The hydroxyl group, in phenol is directly attached to 2 the sp hybridised carbon of benzene ring which acts as an electron withdrawing group. Due to this, the charge distribution in phenol molecule, as depicted in its resonance structures, causes the oxygen of -OH group to be positive
Image
→ The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Write any two differences between $ CH_{3}OH $ and $ C_{2}H_{5}OH $
What happens when benzene diazonium chloride reacts with potassium iodide ? Write only equation of the reaction.
Compound $A$ was prepared by oxidation of compound $B$ with alkaline $KMnO_{4-}.$ Compound $A$ on reduction with lithium aluminium hydride gets converted back to compound $B.$ When compound A is heated with compound $B$ in the presence of $H_2SO_4$ it produces fruity smell of compound $C$ to which family the compounds $A, B$ and $C$ belong to?
The rate constant for the first order decomposition of $H_2O_2$​​​​​​​ is given by the following equation:$\log{k}=14.2-\frac{\text{1.0}\times\text{10}^{4}}{\text{T}}K$
Calculate $E_a​​​​​​​$ for this reaction and rate constant k if its half$-$life period be $200$ minutes.
$($Given: $R = 8.314 J K^{–1} mol^{–1})$
Write chemical reaction for the preparation of phenol from chlorobenzene.
An organic compound contains $69.77\%$ carbon $, 11.63\%$ hydrogen and rest oxygen. The molecular mass of the compound is $86.$ It does not reduce Tollen's reagent but forms an addition compound with sodium hydrogensulphite and give positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write the possible structure of the compound.
Out of 2-chloroethanol and ethanol which is more acidic and why?
How to find out $K_b$ and $K_f$ ?
Carry out the following conversions:
Propanone to 2-Methylpropan-2-ol.
Define the following terms :
  1. Ideal solution.
  2. Molarity $(M).$