WebbCBSE Science (English Medium) Class 12 Assertion: Nitration of chlorobenzene leads to the formation of m-nitrochlorobenzene. Reason: –NO2 group is a m-directing group. - Chemistry Advertisement Remove all ads Advertisement Remove all ads MCQ Assertion: Nitration of chlorobenzene leads to the formation of m-nitrochlorobenzene. Webb16.27, o- and p-bromonitrobenzenes are the major products because the rate of nitration is greater at the ortho and para positions of bromobenzene than it is at the meta position. ... 12! MOCH12 3 MOCH12 3 MOCH12 3! H E H " s s)) E H) E H)) meta e 16.22 Draw the carbocation that results from the reaction of the electrophile at the ortho position
Class 12 Important Questions for Chemistry - AglaSem …
WebbIf we examine the nitration of toluene, tert-butylbenzene, chlorobenzene and ethyl benzoate in the same manner, we can assign relative rates to the ortho, meta and para sites in each of these compounds. WebbHere's the general reaction for the nitration of benzene. So we start off with benzene, and to it, you add concentrated nitric and concentrated sulfuric acids. And that puts a nitro group onto your benzene ring, in place of this proton. Let's look at the mechanism for the nitration of benzene. einfacher apple crumble
NCERT Solutions Fork Class 12 Basic Chapter 13 Amines
Webb12 • Generation of the nitronium ion, NO2 + – Step 1: proton transfer to nitric acid – Step 2: loss of H2O gives the nitronium ion, a very strong electrophile HSO3 OH HON O O 4 ON O H O H Conjugate acid of nitric acid + + Sulfuric acid Nitric acid The nitronium ion ON O O H H O H H + ONO Nitration pKa= -3 pKa= -1.4 Webb1 nov. 2001 · The procedures of production of mononitrochlorobenzene by nitration with 75-97% nitric acid with the yield of the target product of 97.5% were developed. A procedure of precipitation of... WebbSolution: (a) When a primary aromatic amine, dissolved or suspended in cold aqueous mineral acid and treated with sodium nitrite, a diazonium salt is formed. When this freshly prepared diazonium salt is mixed with cuprous chloride, diazonium group is replaced by -Cl. Then chlorobenzene is formed which is Y in this reaction. font color in google docs