Chemical Bonding

I don't think they're all 0 cause well this is a JEE question xd. I saw something online saying O--H bond is rotatable so dipole moment is non-zero but I dont understand it fully
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burrito
burrito2mo ago
nope its not 3 and 4 have mu not equal to 0
burrito
burrito2mo ago
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rxtio
rxtioOP2mo ago
Thanks a lot Thanks sir. So can I say that 1,3 dichloro propane/ 1,4-butanediol etc have non-zero dipole moment cause of lone pair on O and Cl atoms? And though this is a PYQ im not sure what the full quesiton was, but is it possible to find which has more Mu out of the non zero dipole moment compds?
burrito
burrito2mo ago
vector sum
rxtio
rxtioOP2mo ago
Oh yeah
Dexter
Dexter2mo ago
The OH and SH have bent geometry
rxtio
rxtioOP2mo ago
Yes due to LP right
Dexter
Dexter2mo ago
yeap
rxtio
rxtioOP2mo ago
@Dexter Can you tell if I'm right?
Dexter
Dexter2mo ago
hmm interesting see agar kisi bhi confirmation mein dipole moment zero aajaye then us compound ka dipole moment zero hi kehte hai
Nimboi [ping if answering]
yeah that seems to check out
Dexter
Dexter2mo ago
maybe in compounds mein kisi conformer mein dipole moment zero ho
Nimboi [ping if answering]
yeap, 1,3-dichloropropane has a dipole moment of 2.09D
Dexter
Dexter2mo ago
yeah
Nimboi [ping if answering]
they still keep rotating because of ambient environmental energy ryt they dont stay in the most stable conformer
Dexter
Dexter2mo ago
yeah
Nimboi [ping if answering]
thats why conformers exist
Dexter
Dexter2mo ago
hmm yes
Nimboi [ping if answering]
so yeah nonzero dipole
Dexter
Dexter2mo ago
Its the same as optical activity agar kisi bhi conformer mein optically inactive hogaya compound then whole compound is rendered optically active
rxtio
rxtioOP2mo ago
Ahh so only in a particular confirmation of 1,3 dichloropropane and only for a short time dipole moment is zero/
Nimboi [ping if answering]
yeah, so basically never since they keep rotating
rxtio
rxtioOP2mo ago
Hmm yes thank you Shall I mark sovled
Nimboi [ping if answering]
yus tumhari marzi
rxtio
rxtioOP2mo ago
+solved @burrito @iTeachChem @Dexter @Nimboi
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