strength of base

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Edward Suarez 1I
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Joined: Fri Sep 28, 2018 12:27 am

strength of base

Postby Edward Suarez 1I » Sat Dec 08, 2018 2:53 pm

what guildelines do we follow to determine the relative strength of bases? I know for acids, it would be amount of oxygen, strength of bond (weaker bond --> stronger acid), etc. but what about bases?

Michael Torres 4I
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Re: strength of base

Postby Michael Torres 4I » Sat Dec 08, 2018 2:55 pm

If something is a strong acid, then it will be a weaker base. Weaker acids will also be stronger bases.

Edward Xie 2E
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Joined: Fri Sep 28, 2018 12:23 am

Re: strength of base

Postby Edward Xie 2E » Sat Dec 08, 2018 2:57 pm

I think strength of bond also factors in for bases. If the OH has a weaker bond to the metal, then it is a stronger base since the OH can more easily separate/dissociate.

Edward Suarez 1I
Posts: 75
Joined: Fri Sep 28, 2018 12:27 am

Re: strength of base

Postby Edward Suarez 1I » Sun Dec 09, 2018 3:11 am

thanks for your responses!

904837647
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Joined: Tue May 01, 2018 3:00 am

Re: strength of base

Postby 904837647 » Sun Dec 09, 2018 3:37 am

The bond strengths of acids and bases are implied by the relative amounts of molecules and ions present in solution. Strong acids have mostly ions in solution and weak acids exist mostly as molecules with only a few ions in solution.

805097738
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Joined: Wed Sep 18, 2019 12:20 am

Re: strength of base

Postby 805097738 » Mon Nov 25, 2019 8:53 pm

Michael Torres 4I wrote:If something is a strong acid, then it will be a weaker base. Weaker acids will also be stronger bases.


how can acids be bases?

Sydney Myers 4I
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Joined: Fri Aug 09, 2019 12:17 am

Re: strength of base

Postby Sydney Myers 4I » Mon Nov 25, 2019 11:19 pm

805097738 wrote:
Michael Torres 4I wrote:If something is a strong acid, then it will be a weaker base. Weaker acids will also be stronger bases.


how can acids be bases?



I think that is referring to the equilibrium that acid-base reactions can reach. If something is a strong acid, then it is a weak conjugate base.

Isha_Maniyar_Dis2E
Posts: 100
Joined: Thu Jul 11, 2019 12:16 am

Re: strength of base

Postby Isha_Maniyar_Dis2E » Mon Nov 25, 2019 11:29 pm

For halogen acids (H-X, where X is a halogen), the atomic radius of X will result in a stronger bond between H and X. This will weaken the acid because it won't dissociate as easily in water. As a result, it will be a weaker acid and a stronger base.

For oxyacids (H-O-X, where X is a group 5A, 6A, or 7A element), look at the electronegativity of X and the number of oxygens on the acid. If the electronegativity is higher, the bonded H is weaker because the electrons will go toward X. Therefore, it will dissociate more easily. This makes it a stronger acid. As a result, it will be a weaker base.

Hope this helped!

ahuang
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Re: strength of base

Postby ahuang » Wed Nov 27, 2019 11:18 pm

Stronger acids would make weak bases because of its conjugate and vice versa.


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