Ametal, m, of atomic weight 96 reacts with fluorine to form a salt that can be represented as mfx. in order to determine x and therefore the formula of the salt, a boiling point elevation experiment is performed. a 9.18 g sample of the salt is dissolved in 100.0 g of water and the boiling point of the solution is 374.38 k. determine the element m and find the formula of the salt. assume complete dissociation of the salt in solution.

explanation:

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.