Hydrocarbon  is an organic chemical compound composed exclusively of hydrogen and carbon atoms.

The organic chemical compounds which contains only carbon and hydrogen is called hydrocarbons.

Simplest hydrocarbon is Methane.

Major application are propane ,butane .

Hydrocarbon :is an organic compound consisting of hydrogen and carbon.

Hydrocarbons are molecules consisting of both hydrogen and carbon. They are most famous for being the primary constituent of fossil fuels, namely natural gas, petroleum, and coal.

May b I'm not sure this answer but i am already trying  this..sorry for mistake

Hydrocarbons are highly combustible and produce carbon dioxide,water and heat when they are burned.hydrocarbons are highly effective as a source of fuel

201-29-1711

23b

Aspirin, an acetyl derivative of salicylic acid, it is anti inflammatory , antipyretic, Antiplatelets and analgesic.

alkane has just single bond, alkene has double bond. 

aspirin derived from salecylic acid and it is antiplaelet,analgesic,narcotic

Why alkenes always follow Markonikov's rule?

Mehedi Hasan Rabbi

ID:201-29-1700

Answer :

1.Those acids which can donate a proton are called protic acid. 

Example- Hcl,HBr,HI,HF etc.

2.Markovnikov's rule  : The positive addendum will add with the carbon attached with double bond having high number of hydrogen substituents 

It is for unsaturated hydrocarbon  

3.In a reaction of alkene if the electron density is different in both side of the double bond (alkene) is a asymmetric reaction  

4. Secondary carbocation  is more stable  than primary carbocation thats why by following Markovnikov's rule R-CH=CH2+HX  forms 80% of R- CHX-CH3 and 20% of R-CH2-CH2X

• It is state with addition of a protic acid
• It happens on asymmetric alkene  

Batch:23(A) 

Ans:--------

An electrophile is an electron pair acceptor.

An nucleophile is a chemical species that donates an electron pair to form a chemical bond in relation to a reaction.

*Papri

201-29-1647

23(A)

Answer: A nucleophile is a reactant that provides a pair of electrons to form a new covalent bond.

An electrophile is a reactant that accepts a pair of electrons to form a new covalent bond.

Aysha Akter 

I'd: 201-29-1688

Assalamoalaikom.

Thank you farhana farhana 1660 for your basic question. I want to give your answer a simple way--

### What is Electrophilic and what is Nucleophilic?

1. Electrophile means attraction of electron. Those cation is electrophile which have attraction of electron.

2. Nucleophile means attraction of nutron/nucleous/anion. Those compound is nucleophile which have attraction of positive charge.

I hope, you get your answer.

khairul basar mahfuz

id: 201-29-1631

Answer :

1. A alkene symmetrical is an alkene in whose molecule the doubly bonded carbons bear the same ligands eg. 1: In 1, each double bonded carbon bears two methyl groups.In 2, each doubly bonded carbon bears a methyl group and a hydrogen atom.

An unsymmetrical alkene is an alkene in whose molecule the pair of ligands on one doubly bonded carbon is different from that on the other.In 1, one doubly bonded carbon bears two methyl groups and the other a methyl group and a hydrogen atom. Thus, 1 is an unsymmetrical alkene.

1.Ans: Symmetrical alkene:In alkene reaction when the electron density is same in both side of the double bond is called symmetrical alkene .     

CH2=CH2

Asymmetrical alkene:In alkene reaction when the electron density is not same in both side of the double bond is called symmetrical alkene .     

HC3-CH=CH2

2.Ans: Anti-Markovnikov’s rule: Negative part of the addendum will join with the carbon attache to the double bond having highest number of hydrogen.

HC3-CH=CH2 +HBr----> HC3-CH2-CH2Br

Tusnim Jahan

ID No: 201-29-1674 

Protic acid is an acid which produce positive hydrogen ion in an aqueous solution

Ruhul Amin

23(b)

MARKOVNIKOV'S rule:
The positive addendum will add to the carbon which is attatched with the double bond having highest number of hydrogen.

HC3-CH=CH2 +HBr -----> HC3-CHBr-CH3

Anti-MARKOVNIKOV'S rule:
The negative addendum will add to the carbon which is attatched with the double bond having highest number of hydrogen.

HC3-CH=CH2 + HBr----> HC3-CH2-CH2Br

Tusnim Jahan

Id no: 201-29-1674 

Mahmuda sultana *answer in your questions 

Saturated  compound: It is an organic compound which carbon atoms are bonded by single bonds is called saturated compound. 

Ex: CH4,C2H6

Unsaturated compound : It is an organic compound where carbon atoms have double bonds or triple bonds is called Unsaturated compound.

Ex:C2H4,C6H6

Mosarrat zenith

id:201-29-1652

23(B)

Hydrocarbon is an organic compound consisting entirely on hydrogen and carbon. Coal is a rock which can be burned as a solid fossil fuel. Fossil fuels are hydrocarbons, primarily coal/fuel oil or natural gas formed from the remains of dead plant and animals. The term fossil fuel also includes hydrocarbon containing natural resources. Coal is composed of carbon also contains hydrogen, sulphur, oxygen and nitrogen. And it is formed from peat which is technically a fossil resource. That's why, I can say coal is a hydrocarbon.

Sadia Salim

201-29-1679

here it's supposed to be a covalent bond as they share their electron and it's also a polar bond because Br is from halogen group.

Why uv light is needed in exhaustive halogenation of alkane?

Ans: Alkanes react with halogen (such as chlorine or bromine) when the mixture is exposed to ultraviolet light (symbolised as hv or uv) or when heated to high temperature (200 - 400oC). The function of ultraviolet light is to provide energy for the homolytic cleavage of halogen (Cl-Cl or Br-Br).

201-29-1647

23(A)