in the Wurtz reaction method of preparation of alkanes, the stoichiometric coefficient of Sodium is
2 Na atoms are used.
When two hydrogen atoms in benzene are replaced by two similar or different monovalent atoms or groups, how many different position isomers are possible?
Ortho , meta and para.
Which of the following reactions of methane is incomplete combustion?
is incomplete combustion.
The hydrocarbon which can react with sodium in liquid ammonia is
It is a terminal alkyne, having acidic hydrogen.
n-Propylbromide on treatment with ethanolic KOH is
Elimination reaction takes place.
The number of possible conformational isomers of ethane is
Infinite conformational isomers of ethane is possible since continuous rotations around C-C bond is there.
The unusual behavior of benzene is explained by
Continuous delocalization of pi electron or resonace in benzene
Among the following compounds the one that is most reactive towards electrophilic nitration is
Methyl group is electron donating group, hence increase electron density in benzene ring.
The treatment of CH3MgX with CH3C ≡ C−H produces
Methane is produced by reaction with grignard reagent.
Acetylene is prepared by the action of water on
Ethyne gas(Acetylene) is prepared in the laboratory by the action of water on calcium carbide.
CaC2 + 2H2O ----------> C2H2 + Ca(OH)2
boiling point of alkanes
As molecular mass increase boiling point increases.
Aromatics are charachterized by the presence of _____ π electrons in the ring where n is an integer (n = 0, 1, 2, . . .).
Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?
Neopentane with Cl2 and monohalogenation gives single product.
Benzene reacts with chlorine in sunlight to give a final product
In this reaction we are not using AlCl3 we are using direct Cl2 gas in presence of strong radiation-Ultraviolet which is then able to break open the double bonds of the benzene ring and facilitate the approach of the reactive intermediate of chlorine, most probably a free radical of Cl. since it is believed if the reaction proceeds by free radical mechanism this way all the carbons of benzene will have equal share of electron (moreover in the space freons disturbs ozone layer because they are able to form free radicals with UV rays). So it is believed it proceeds via free radical mechanism and hence form gammaexane(gamma isomer) with other minor isomers of C6Cl6H6.
What is the product obtained on electrolyzing potassium fumarate?
Ethyne (C2H2) and CO2.accompanied with the formation of KOH and H2.
Hence B is correct.
Halogenation of alkanes is a
Alkane halogenation is an example of a substitution reaction, a type of reaction that often occurs in organic chemistry. A substitution reaction is a chemical reaction in which part of a small reacting molecule replaces an atom or a group of atoms on a hydrocarbon or hydrocarbon derivative.
What is the commercially used method to produce benzene?
All of the mentioned methods can be used but the commercially used method is from the isolation from coal tar.
Ethyl benzene CANNOT be prepared by ______
Wurtz reaction is used to make symmetrical hydrocarbons thus it cannot be used to make ethyl benzene.
The general formula of a cycloalkane is
Cycloalkanes have general formula of CnH2n
What product is obtained by heating ethylidene chloride with alcoholic KOH?
Dehydrohalogenation takes place. Preparation of alkyne by heating ethylene chloride with alc. KOH followed by sodamide in ammonia solution.
Carbon-carbon double bond in alkenes consists of
sigma bond is formed by head-on overlap, pi bond is formed by lateral overlap. Alkenes contain 1 pi bond and 1 sigma bond.
in Friedel-Crafts alkylation reaction, when benzene is treated with an alkyl halide in the presence of a catalyst, alkylbenene is formed. The catalyst used is
anhydrous alluminium chloride produces electrophile to attack benzene.
Ozonolysis of an organic compound 'A' produces acetone and propionaldehyde in equimolar mixture. Identify 'A' from the following compounds
Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E.Compound E on further treatment with aqueous KOH yields compound F.Compound F is
What product is obtained by passing ethanol vapours over heated alumina?
Dehydration of alcohols is done in presence of alumina at 3500−4000 and by this process alkene is obtained.