Strong vs. weak

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Elle_Bertuccelli_1B
Posts: 24
Joined: Sat Jul 09, 2016 3:00 am

Strong vs. weak

Postby Elle_Bertuccelli_1B » Fri Nov 25, 2016 8:03 am

How do we tell the difference between a strong acid or base and a weak one? I know that it refers to the donation of protons, but how can we tell by looking at a chemical equation?

Shushanna S 3F
Posts: 24
Joined: Sat Jul 09, 2016 3:00 am

Re: Strong vs. weak

Postby Shushanna S 3F » Fri Nov 25, 2016 8:31 am

Some of them you just have to memorize. There should be a table in the book (either in Fundamentals or in this chapter) with a list of strong acids and bases.

Rosalva_Mejia_41
Posts: 19
Joined: Wed Sep 21, 2016 2:56 pm

Re: Strong vs. weak

Postby Rosalva_Mejia_41 » Fri Nov 25, 2016 10:44 am

I don't think you can really tell by the chemical equation. You need to solve for pka/pkb or for phka/phkb in order to determine which ones are stronger or weaker.

Anthony_Imperial_1G
Posts: 22
Joined: Wed Sep 21, 2016 2:59 pm

Re: Strong vs. weak

Postby Anthony_Imperial_1G » Fri Nov 25, 2016 2:23 pm

You can determine the strength of an acid or a base by looking at the atomic radius. For acids, the larger the atomic radius, the more susceptible it will be to losing a hydrogen making it a stronger acid.

In other cases you will need to mathematically find the values for pH.


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