Alkane

Question 1

Difference between saturated and unsaturated hydrocarbons

Answer 1

• Saturated Hydrocarbons contains C-C single bond
• Unsaturated are C-C double and triple bond

Question 2

What is homolytic fission

Answer 2

When bond between two atoms breaak and electrons are distributed equally.

Question 3

What is heterolytic fission

Answer 3

when bond between twwo atoms break and one atom gets +ve charge while another gets negative one.

unequal distribution of electrons.

Question 4

What are alkanes?

Answer 4

Open chain hydrocarbons containing onle C-C single bond.

Question 5

Properties of Alkane

Answer 5

1. Alkanes are nonpolar organic …. insoluble in water
2. Density:0.8g/cm^3
3. Boiling point is low , increase with the increasing number of carbon atoms.
4. C1 to C4—-Gas
5. C5 t0 C17—Liquids
6. C17>……….Solids

Question 6

Difference of boiling point between brached and unbranched alkane

Answer 6

B.P of Straight>Branced because staright provide more surface area

surface are is directly proportional to B.P

Question 7

Hybridization of alkane

Answer 7

Sp3 , 109.5 degree , Tetrahedral , 1.54Angstom .

Question 8

6 properties

Cycloalakanes?

Answer 8

• Cyclic chain alkanes
• little more reactive than alkanes
• 60 degree due to angle strain
• less B.p than alkanes because of angle strain
• C3 and C4——gases
• C5 and above………liquid

Question 9

Another name of alkanes and meaning of them

Answer 9

Parrafins—– Latin
para=little + affins= affinity

means they have less reacttivity strength.

Question 10

Why alkanes are less reactive

Answer 10

1. Because they are non polar in nature and find no polar reaction side.
2. C-C bond between them is so strong in alkane due to sigma bonds only.