Physical Properties

Question 1

color of alkyl halides when pure

Answer 1

colourless

Question 2

smell of volatile halogen ccompounds

Answer 2

sweet smell

Question 3

Nature of methyl, ethyl halides and higher members

Answer 3

gases at room temperature. higher members are liquids and solids

Question 4

Why are boiling points of halides higher than those of hydrocarbons having comparable molecular mass?

Answer 4

due to stronger intermolecular forces.

Question 5

order of boiling points of alkyl halides

Answer 5

RI>RBr>RCl>RF

Question 6

boiling point of isomeric haloalkanes

Answer 6

decrease with increase in branching

Question 7

why do para isomers have higher boling points than ortho and meta isomers?

Answer 7

due to its symmetry which fits in crystal lattice better.

Question 8

density

Answer 8

increases with an increase in number of carbon atoms

Question 9

solubility of haloalkanes

Answer 9

is low as energy is required to break attraction between haloalkane and water molecules respectively. however they release less energy wen new attractions are set up

Question 10

why do haloalkanes dissolve in organic solvents?

Answer 10

as the energy released when new attractions are set up is of the same level as that of the energy required to break the bond in the separate haloalkane and solvent molecule.