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Questions tagged [dipole]

For questions about the dipole moment of a bond or a molecule; its calculation, comparison with other bonds or molecules, affect on molecular properties, etc.

A dipole is the result of an uneven distribution of electron density within a molecule. Perfectly symmetric molecules (such as benzene) will have no dipole moment while a non-symmetric one like hydrogen fluoride (HF) will have a very large dipole moment.

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Is the carbon atom in the carbon dioxide molecule partially positive?

I had a question about nonpolar molecules that have symmetrical dipole vectors. Let's take $\ce{CO2}$ as an example. Each of the $\ce{C=O}$ bonds are pulling in the opposite way. My teacher says that this causes all atoms in $\ce{CO2}$ to be equally…
John Hon
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Comparing the dipole moment of water and ethanol

Why is the dipole moment of water (1.85D) larger than ethanol (1.66D)? I thought the inductive effect from ethyl would develop more delta - charge on oxygen.. hence increasing the charge and the dipole moment
cgupta2727
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How to determine which of two similar compounds has the larger dipole moment?

I am solving some problems involving the order of dipole moments of some compounds. I could solve most of them but the following: Which has greater dipole moment? $\ce{CH3F}, \ce{CH_3Cl}$ Since fluorine is more electronegative my assumption…
Pink
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Why does ozone have a dipole moment different than 0

First of all, I know that the reason for this is the bent structure of the molecule. However, we were taught in my class that the dipole moment of a molecule is equal to the vector sum of the dipole moment of each bond in the molecule. But ozone…
EL_9
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Comparing dipole moments of hydrogen halides

How can we compare dipole moments of halide ions? As we go down the group, the induced charged hydrogen decreases as electronegativity difference between hydrogen and corresponding halogen decreases but the sepeartion between the poles of dipoles…
Acc2
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When do lone pairs affect dipole moments?

My textbook says that NH3 has more dipole moment than NF3 despite F being more electronegative than H, because the dipole moment due to the lone pair on N points in the same direction as the ones due to the H atoms, but not the F atoms. But this is…
Hayden Soares
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Dipole moment in aromatic compounds

Compare the dipole moment of the following: o-nitrophenol o-dichlorobenzene o-xylene What I thought was: o-dichlorobenzene should have the maximum, due to the acute angle and being more electronegative than the I- effect of $\ce{CH3}$ groups, and…
Yogeshwara Krishna
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How does this rotation minimize the dipole moment?

A paper I'm reading says: The low energy conformation of 3 minimizes the overall dipole moment of the compound and thus rotates the exocyclic amide 180° from desired conformation, as can been seen in structure 4. Why does this rotation minimize…
histrionics
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how can a covalent molecule with a permanent dipole still have temporary dipoles?

As I have read online, temporary dipoles occur due to the random fluctuations of the electron cloud. The electrons move randomly to one side of the molecule creating a negative partial charge while the nucleus is "left on its own" on the other side…
lohey
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Dipole-dipole interaction

So, dipole-dipole interaction exists between two polar molecules? A polar molecule consists of two ions and different charges (one is higher)?
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Comparison of the dipole moments of CHCl3 and CBrCl3

Consider compounds $\ce{CHCl3}$ and $\ce{CBrCl3}$: Which compound has the larger dipole moment? Explain your choice. Okay, so I've been trying to figure it out and I thought dipole moment had to do with electronegativity but now I'm not sure.
Callie Steinl
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