How does benzene react with H2SO4?
Sulfonation of benzene is a process of heating benzene with fuming sulphuric acid (H2SO4 +SO3) to produce benzenesulfonic acid.
How is benzenesulfonic acid made?
Benzenesulfonic acid was first obtained, together with diphenyl sulfone, by E. MITSCHERLICH in 1834 by heating benzene with fuming sulfuric acid. The industrially important reaction of benzenesulfonic acid with alkali hydroxide to form phenol (alkali fusion) was developed by A. WURTZ and A.
Is benzene a carcinogen?
The Department of Health and Human Services (DHHS) has determined that benzene causes cancer in humans. Long-term exposure to high levels of benzene in the air can cause leukemia, cancer of the blood-forming organs.
When benzene sulphonic acid is heated with Dil H2SO4 results in formation of benzene?
Benzene on heating with conc. H2SO4 gives benzene sulphonic acid which when heated with superheated steam under pressure gives benzene.
What happens when benzene is heated with H2SO4 at 250?
Benzene on heating with conc. H2SO4 gives benzenesulphonic acid which when heated with superheated steam under pressure gives benzene.
What cancers are caused by benzene?
What happens when benzene is treated with conc H2SO4?
What is the role of H2SO4 in the nitration of benzene rings?
In the protonation of nitric acid by sulfuric acid, the source of the nitronium ion induces the removal of a water molecule and the creation of a nitronium ion. The first step in benzene nitration is to activate HNO3 with sulfuric acid to create a nitronium ion, a stronger electrophile.
What is benzenesulfonic acid used for?
Benzenesulfonic acid’s use as a reagent in the manufacture of phenol, resorcinol, and other organic syntheses and as a catalyst could result in its release to the environment through various waste streams. Benzenesulfonic acid is expected to have very high mobility in soil.
How is benzene prepared from benzenesulfonic acid?
Nitrobenzene on reduction in acidic medium gives Aniline.
Why is benzoic acid a stronger acid than phenol?
– The strength of these acids can be compared based on their pKa values. – Higher the pKa value means lesser the ka value and it implies that the compound is more acidic as more no of free H+ ions are in the solution. – pKa of phenol >pKa of acetic acid
Why sulphuric acid is called King of chemicals?
Sulphuric acid (H2SO4) is called the “King of Chemicals” because it is used in the preparation of a very large number of other useful chemicals such as hydrochloric acid, nitric acid, dyes, drugs etc. Sulfuric acid has the properties of strong acidic nature and is corrosive.