What happens when phenol reacts with Sulphuric acid?

When phenol reacts with concentrated sulphuric acid, Phenol reacts with sulfuric acid giving substituted phenols. H2SO4 gives a mixture of o- and p- products and then at room temperature o- product is more stable, which on treatment with conc. HNO3 will yield o-nitrophenol.

What is the action of concentrated Sulphuric acid on phenol?

H2SO4 at room temperature on phenol: At 298 K, phenol reacts with conc. H2SO4 forming o-phenol sulphonic acid as major product.

What substance does sulfuric acid react violently with?

Sulfuric acid reacts violently with alcohol and water to release heat. It reacts with most metals, particularly when diluted with water, to form flammable hydrogen gas, which may create an explosion hazard.

When phenol is treated with concentrated Sulphuric acid at hundred degree Celsius The main product is?

para product
The reaction of phenol with concentrated sulfuric acid is thermodynamically controlled. At 25°C, the ortho product predominates while at 100°C, the para product is the major product.

What can phenols react with?

Phenol reacts with sodium hydroxide to form a salt which is much more soluble than phenol itself.

• Phenol is such a weak acid that it does not react with carbonates.
• Like other alcohols phenol can form esters, but it doesn’t react directly with carboxylic acids.

What happens when phenol reacts with concentrated HNO3 and concentrated h2 S o4?

Phenols give o-and p-nitrophenol on nitration with conc. HNO3 and H2SO4 mixture.

What happens when phenol reacts with concentrated nitric acid?

If phenol is treated with concentrated nitric acid then picric acid is formed.

What does not react with sulfuric acid?

Elements below hydrogen in the electrochemical series don’t react with sulphuric acid. They include Copper, Silver, Gold etc. Elements like Platinum and Gold are called noble metals too as they don’t react with most of the compounds or other reactants.

Which metals do not react with sulfuric acid?

Gold and platinum are noble metals in the sense that they remain unreactive. As a result, it doesn’t react with sulphuric acid.

What is the action of sulphuric acid on phenol at two different temperatures?

Phenol reacts with different concentrations of sulphuric acid at different temperatures to yield different products. When phenol is heated at 100∘C with concentrated sulphuric acid, 4−hydroxy benzene sulphonic acid is formed. Reaction taking place is: SO3H group is sulphonic acid group and OH group is hydroxyl group.

What happens when phenol is treated with conc H2SO4 at 373K?

At 373 K, carbolic acid (phenol) reacts with concentrated sulphuric acid to form p-phenolsulfonic acid.

How does phenol react with acid anhydride?

Making esters from phenol using an acid anhydride Again, you can react the phenol with sodium hydroxide solution first, producing the more reactive phenoxide ion. If you simply use phenol and ethanoic anhydride, phenyl ethanoate is formed together with ethanoic acid.

What happens when Phenol reacts with nitric acid?

The reactions with nitric acid are complicated because nitric acid is an oxidising agent, and phenol is very easily oxidised to give complex tarry products. What follows misses all that complication out, and just concentrates on the ring substitution which happens as well.

What happens when Phenol reacts with bromine?

Activation of the ring. The -OH group attached to the benzene ring in phenol has the effect of making the ring much more reactive than it would otherwise be. For example, as you will find below, phenol will react with a solution of bromine in water (bromine water) in the cold and in the absence of any catalyst.

What is the reaction between nitric acid and picric acid?

Phenol reacts with dilute nitric acid at room temperature to give a mixture of 2-nitrophenol and 4-nitrophenol. With concentrated nitric acid With concentrated nitric acid, more nitro groups substitute around the ring to give 2,4,6-trinitrophenol (old name: picric acid).

Why does phenol undergo electrophilic substitution when it has a high electron density?

In other words, it undergoes electrophilic substitution. If you increase the electron density around the ring, it becomes even more attractive to incoming electrophiles. That’s what happens in phenol.