Question

Intermolecular Dipole-Dipole Forces

From each pair below, select the molecule that will display stronger intermolecular dipole-dipole forces in a sample of the pure substance.

O3 CS2

PCl3 SO3

SF6 SF4

CF4 CH2F2

Answer 1

Intermolecular Dipole-Dipole Force is applicable for those molecules which gave permarent dipole moment.
Intermo leenlar Dipdle-Dipole Tudoraction/ Foree- Th's fonee is prodace due tomctal interachion of moleenle havin a end of one olenle is attracted.The Positive end One moleule is at thatel towards the neanhive endc Other moleenle and vice versa Pernwrent dipo le moment The posi- Val -d 242x 2122 Here, y 4 M2 are the pernret dipole moment af) m distanee Spperate between 2 nolenle. 2u4 ( () ( ( (I Cs2 S03 S FACF2 bihor the

CFA 03 Pcl3 SF CS2 S03 SFA C F2 we can conclude thit hishor the moment hhr will be Dthe dipole -dipole foree From the em 52 shows permanent dipole Linewremoteenle, alt the dipole mome cancels eaeh othor dipole monent D shows inermolealan Dipole- Dipole fonee Case S03 In b/ho Pcl 3 e n. shows pomarent dipole moment Syumeial strnohre moment Camcels ene dipole moment =0 pCa shows intomoleenlare Dipole -Dipole

Case-I5 In blus St Sy FL s 4 1 F F F tia stuchres shows No shows pemnant pple dipole SF shows Trntormo leadar dipble -dipole fpnee Tn bw CFu4 C52 THT H F Ci 1H Dipole moment o eneh c-F bond cameel eaeh o ther, hence Dipole moment 0 F- At F shows permarent dipole moment CE Shows intermolecur dipde-dipole fonee