How many liters would 30g of Cl2 gas make?

9.4L

Explanation:

Given parameters:

Mass of Cl₂ gas  = 30g

Unknown:

Volume of gas  = ?

Solution:

To solve this problem, let us assume that this reaction takes place under standard temperature and pressure conditions.

Therefore;

             Volume of gas  = number of moles  x 22.4

To find the number of moles;

              Number of moles  =

                  molar mass of  Cl₂ = 2(35.5)  = 71g/mol

            Number of moles  =   = 0.42mole

So;

            Volume of gas = 0.42 x 22.4  = 9.4L

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.