Complete and balance the equation for this single-displacement reaction. phases are optional. li+naoh-->

Explanation:

A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution.

The balanced chemical equation is :

This is a single replacement reaction in which lithium replaces sodium from its aqueous solution. As lithium is more reactive than sodium, it easily loses electrons to convert to in and in accepts electrons to form .

the answer is 1 i believe

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.