Question

In each pair complete the following 3 parts;

      i) identify ALL the intermolecular forces present in each (ion-dipole; H-bonding; diploe-dipole; dispersion)

      ii) circle the substance in each pair with the higher boiling point

     iii) explain your choice for “ii”

in aqueous solution

a) CH₃Bror   CH₃F                     b) CH₃CH₂CH₂OH   or   CH₃CH₂OCH₃                     c) MgCl₂   or   SrCl₂

Answer 1

based on the type of atoms or groups are attached identify the intermolecular forces and then boiling point as follows

B.point a ChaBr on CH₃F having CH3 – BY -13.56°c) - CHit 28 - - -784 dipole-dipole forces Both 978 7.60 cu b) CH₃ CH2 CH₂OH con CH₃ CH₂O CH2 - CH₂ CH2 CH₂-OH Alcohol Ether CH₂ CH₂ OCH Hydrogen dipte-dipole bonding and london disperssion forces C) Macle cors srce macl [14120/~ . Both aon dipole . Sock 12500 forces - More will be the attraction more for breaking of bonds so More energy required Boiling point