Strong acids vs weak acids

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Angeline 3E
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Joined: Wed Sep 18, 2019 12:20 am

Strong acids vs weak acids

Postby Angeline 3E » Sun Nov 24, 2019 11:27 pm

What is the difference and significance in reactions?
Last edited by Angeline 3E on Sun Nov 24, 2019 11:29 pm, edited 1 time in total.

Patricia Chan 1C
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Joined: Sat Jul 20, 2019 12:16 am

Re: Strong acids vs weak acis

Postby Patricia Chan 1C » Sun Nov 24, 2019 11:28 pm

Weak acids will have higher pH values than strong acids. A weak acid is an acid which partially dissociates into ions in an aqueous solution, while a strong acid will fully dissociate into ions. A common example of a weak acid is acetic acid. HCl is a common example of a strong acid.

Angeline 3E
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Joined: Wed Sep 18, 2019 12:20 am

Re: Strong acids vs weak acis

Postby Angeline 3E » Sun Nov 24, 2019 11:29 pm

Patricia Chan 1C wrote:Weak acids will have higher pH values than strong acids. A weak acid is an acid which partially dissociates into ions in an aqueous solution, while a strong acid will fully dissociate into ions. A common example of a weak acid is acetic acid. HCl is a common example of a strong acid.


Is there a way to know if something is a strong acid or do we just memorize the compounds given in lecture?

Patricia Chan 1C
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Re: Strong acids vs weak acids

Postby Patricia Chan 1C » Sun Nov 24, 2019 11:31 pm

Most acids are considered weak because few acids actually fully dissolve into ions. It would be easiest to just memorize the strong acids (for example HCl, HBr, and so on) to understand which ones WILL fully dissolve. If an acid isn't a part of that list, it's likely a weak acid.

Angeline 3E
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Joined: Wed Sep 18, 2019 12:20 am

Re: Strong acids vs weak acids

Postby Angeline 3E » Sun Nov 24, 2019 11:33 pm

Patricia Chan 1C wrote:Most acids are considered weak because few acids actually fully dissolve into ions. It would be easiest to just memorize the strong acids (for example HCl, HBr, and so on) to understand which ones WILL fully dissolve. If an acid isn't a part of that list, it's likely a weak acid.


Thank you, does the same go with bases?

Patricia Chan 1C
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Joined: Sat Jul 20, 2019 12:16 am

Re: Strong acids vs weak acids

Postby Patricia Chan 1C » Sun Nov 24, 2019 11:33 pm

Yes! I believe the list of strong bases is a bit longer than that of strong acids, but the same concept applies. Hope this helps!

Aadil Rehan 1D
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Re: Strong acids vs weak acids

Postby Aadil Rehan 1D » Sun Nov 24, 2019 11:35 pm

The mnemonic I use to remember strong acids for me is SPN IBC - Sulfuric Perchloric Nitric, then Hydroiodidic, Hydrobromic, Hydrochloric.

Sean Cheah 1E
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Re: Strong acids vs weak acids

Postby Sean Cheah 1E » Mon Nov 25, 2019 12:17 pm

Neutralization reactions involving weak acids and bases are a lot more complicated than those that only deal with strong acids and bases. This is because the incomplete ionization of the weak acids and bases results in an equilibrium that one would then need to create a so-called ICE table to solve (at that point it's not as simple as merely identifying the limiting reactant and going from there).

PranaviKolla2B
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Re: Strong acids vs weak acids

Postby PranaviKolla2B » Mon Nov 25, 2019 12:29 pm

Is a Lewis acid stronger or weaker than a Bronsted acid, or are they just two different ways of defining acids?


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