Write the name of reaction during conversion of phenol to salicylic acid

Match the column I with column II and mark the appropriate choice. (A) Methanol (i) Conversion of phenol to o-hydroxy salicylic acid (B) Kolbe's reaction (ii) Ethyl alcohol (C) Williamson's synthesis (iii) Conversion of phenol to salicylaldehyde (D) Conversion of 1 0 alcohol to aldehyde (iv) Wood spirit (E) Reimer-Tiemann reaction (v) Heated copper at 573 K (F) Fermentation (vi) Reaction of an alkyl halide with sodium alkoxide

\( \newcommand\) • • • • • • This page gives details of some reactions of phenol not covered elsewhere in this section. It deals with the combustion and esterification of phenol, and the use of iron(III) chloride solution (ferric chloride solution) as a test for phenol. Combustion of phenol Phenol burns in a plentiful supply of oxygen to give carbon dioxide and water. \[ C_6H_5OH + 7O_2 \rightarrow 6CO_2 + 3H2O\] However, for compounds containing benzene rings, combustion is hardly ever complete, especially if they are burnt in air. The high proportion of carbon in phenol means that you need a very high proportion of oxygen to phenol to get complete combustion. Look at the equation. As a general rule, the hydrogen in a molecule tends to get what oxygen is available first, leaving the carbon to form carbon itself, or carbon monoxide, if there isn't enough oxygen to go round. Phenol tends to burn in air with an extremely smoky flame - full of carbon particles. Esterification of phenol You will probably remember that you can make esters from alcohols by reacting them with carboxylic acids. You might expect phenol to be similar. However, unlike alcohols, phenol reacts so slowly with carboxylic acids that you normally react it with acyl chlorides (acid chlorides) or acid anhydrides instead. Making esters from phenol using an acyl chloride A typical acyl chloride is ethanoyl chloride, CH 3COCl. Phenol reacts with ethanoyl chloride at room temperature, although the reaction isn't...

• • • • Question:82. The decomposition of salicylic acid to phenol and carbon dioxide was carried out at 200.0∘C, a temperature at which the reactant and products are all gaseous. A 0.300 g sample of salicylic acid was introduced into a 50.0 mL reaction vessel, and equilibrium was established. The equilibrium mixture was rapidly cooled to condense salicylic acid and phenol 82. The decomposition of salicylic acid to phenol and carbon dioxide was carried out at 200. 0 ∘ C, a temperature at which the reactant and products are all gaseous. A 0.300 g sample of salicylic acid was introduced into a 50.0 mL reaction vessel, and equilibrium was established. The equilibrium mixture was rapidly cooled to condense salicylic acid and phenol as solids; the CO 2 ​ ( g ) was collected over mercury and its volume was measured at 20. 0 ∘ C and 730 mmHg. In two identical experiments, the volumes of CO 2 ​ ( g ) obtained were 48.2 and 48.5 mL, respectively. Calculate K p ​ for this reaction, for pressures in atmospheres. 83. One of the key reactions in the gasification of coal is the methanation reaction, in which methane is produced from synthesis gas-a mixture of CO and H 2 ​ . CO ( g ) + 3 H 2 ​ ( g ) ⇌ CH 4 ​ ( g ) + H 2 ​ O ( g ) Δ r ​ H = − 230 kJ mol − 1 ; K c ​ = 190 at 1000 K ​ (a) Is the equilibrium conversion of synthesis gas to methane favored at higher or lower temperatures? Higher or lower pressures? (b) Assume you have 4.00 mol of synthesis gas with a 3 : 1 mole ratio of H 2 ​ ...

Hint :Benzene attached to a hydroxyl functional group is called phenol. Salicylic acid is a derivative of phenol itself with an additional carboxylic acid functional group attached to a position ortho to the hydroxyl group of phenol. Complete Step By Step Answer: Salicylic acid is an important industrial organic compound that can be derived from phenol through two different types of reactions. It contains the same structure as that of phenol with an additional carboxylic acid group $ (COOH) $ placed at the ortho position (adjacent position) of the hydroxyl group of phenol. The two methods of converting phenol to salicylic acid are as follows: Kolbe-Schmitt reaction: This reaction involves the conversion of acidic phenol into a phenoxide ion in presence of sodium hydroxide base. This is followed by the attack of phenoxide ion of the electrophilic carbon dioxide gas resulting in a carboxylate group getting attached at the ortho position. The reaction ends with a mild acidic hydrolysis that gives salicylic acid. Thus it is a base facilitated carboxylation of phenol. The overall reaction can be written as follows: $ $ Reimer–Tiemann reaction: This reaction involves the conversion of phenol to salicylic acid by treatment of phenol at high temperatures with carbon tetrachloride in the presence of an alkali followed by mild hydrolysis. The reaction can be written as follows: $ $