strength of bonds

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Elyssa Smith 4B
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Joined: Wed Sep 18, 2019 12:22 am

strength of bonds

Postby Elyssa Smith 4B » Thu Oct 24, 2019 11:34 am

What determines bond strength? Is this a value you can calculate?

Rita Chen 1B
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Joined: Sat Jul 20, 2019 12:15 am

Re: strength of bonds

Postby Rita Chen 1B » Thu Oct 24, 2019 12:13 pm

The strength of a bond is affected by the charge and distance for ionic bonds. The strength of a bond is affected by the electronegativity differences and the bond length. Generally, double bonds are stronger than single bonds and triple bonds are stronger than double bonds. We will probably need to know the energy of the bond, which is going to be the enthalpy of bonds broken minus the enthalpy of bonds formed

Michelle Chan 1J
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Re: strength of bonds

Postby Michelle Chan 1J » Thu Oct 24, 2019 1:04 pm

Usually shorter bonds (in distance, Angstroms) are stronger than longer bonds.

Vincent Leong 2B
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Re: strength of bonds

Postby Vincent Leong 2B » Thu Oct 24, 2019 1:06 pm

I think Professor Lavelle hasn't gone over it in class yet but there should be a formula or methodology to calculating bond length (primarily looking at single, double, and triple bonds in a lewis dot structure diagram) and thus will help determine bond strength.

Yailin Romo 4G
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Re: strength of bonds

Postby Yailin Romo 4G » Thu Oct 24, 2019 1:13 pm

I'm not quite sure if there is a value that we use to determine bond strength I think just remembering that as the number of bonds increase, so does its strength so the strongest bonds are triple bonds>double bonds>single bond with single bonds being the weakest.

705198479
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Joined: Wed Sep 18, 2019 12:20 am

Re: strength of bonds

Postby 705198479 » Thu Oct 24, 2019 1:33 pm

is it just the one and double bonds that can tell which is stronger

505106414
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Joined: Wed Sep 18, 2019 12:17 am

Re: strength of bonds

Postby 505106414 » Thu Oct 24, 2019 1:36 pm

Is an ionic or a covalent bond typically stronger?

Junwei Sun 4I
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Joined: Wed Oct 02, 2019 12:16 am

Re: strength of bonds

Postby Junwei Sun 4I » Thu Oct 24, 2019 8:24 pm

Triple bonds are shorter than double bonds because there are more attraction forces and they tend to be stronger. Double bonds are shorter and stronger than single bonds because of the same reason.
Last edited by Junwei Sun 4I on Thu Oct 24, 2019 8:50 pm, edited 1 time in total.

PranaviKolla2B
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Re: strength of bonds

Postby PranaviKolla2B » Thu Oct 24, 2019 8:32 pm

In terms of electrons, what is the difference between a triple bond, a double bond, and a single bond?

Junwei Sun 4I
Posts: 125
Joined: Wed Oct 02, 2019 12:16 am

Re: strength of bonds

Postby Junwei Sun 4I » Thu Oct 24, 2019 8:46 pm

PranaviKolla3G wrote:In terms of electrons, what is the difference between a triple bond, a double bond, and a single bond?


Triple bonds represent three pairs of electrons. Double bonds represent two pairs of electrons. Single bonds represent one pair of electrons.

505106414
Posts: 55
Joined: Wed Sep 18, 2019 12:17 am

Re: strength of bonds

Postby 505106414 » Tue Nov 19, 2019 8:37 pm

Does strength of bonds relate to its melting point?

Caitlin Ciardelli 3E
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Re: strength of bonds

Postby Caitlin Ciardelli 3E » Sun Dec 01, 2019 11:32 pm

yes, strength does correlate to melting points. The stronger the bond, the more energy required to break it, thus the higher the temp/energy required

Shana Patel 1C
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Joined: Wed Sep 30, 2020 9:36 pm

Re: strength of bonds

Postby Shana Patel 1C » Sun Oct 25, 2020 12:14 pm

505106414 wrote:Is an ionic or a covalent bond typically stronger?

Ionic bonds are stronger than covalent bonds because they involve the trtansfer. of electrons rather than a sharing of electrons.

Arnav Saud 2C
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Joined: Wed Sep 30, 2020 9:51 pm

Re: strength of bonds

Postby Arnav Saud 2C » Sun Oct 25, 2020 5:55 pm

PranaviKolla2B wrote:In terms of electrons, what is the difference between a triple bond, a double bond, and a single bond?

A good rule of thumb is that typically the stronger the bond is, the shorter it will be in length.
Triple bonds are the shortest of the bond types and have 3 pairs of electrons. Due to the 3 electron pairs, they are also the strongest.
This is followed up by double bonds which have 2 pairs of electrons.
Single bonds are the weakest in strength of the 3 and only contain 1 electron pair; however, they are also the longest.

Queena Chu 3E
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Joined: Wed Sep 30, 2020 10:09 pm

Re: strength of bonds

Postby Queena Chu 3E » Sun Oct 25, 2020 11:15 pm

505106414 wrote:Does strength of bonds relate to its melting point?

Yes, it does! Since more energy is needed to break stronger bonds, bonds that break with higher melting points would suggest that more energy is required to break the bonds.


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