If 25.21 ml of naoh sloution is required to react completed with .550 g khp, what is the molarity of the naoh solution

= 0.107 M or 0.107 mol/Liter

Explanation:

The molar mass of KHP is 204.22 g/mol

Therefore;

Moles of KHP = 0.550 g/204.22 g/mol

                      = 0.00269 moles

But, there is an equivalence of 1 : 1 between moles of KHP and moles of NaOH.

Hence; Moles of NaOH is 0.00269 moles

But; Molarity or concentration = Number of moles /Volume in Liters

                                                  = 0.00269 moles/ 0.02521 L

                                                   = 0.107 M or 0.107 mol/L

is there multiple choice answers?

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.