Strong acids

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Mingzi Yang 1E
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Joined: Wed Sep 30, 2020 9:53 pm

Strong acids

Postby Mingzi Yang 1E » Sat Dec 05, 2020 9:45 pm

What are some common strong acids that I should memorize???

IsaacLaw1E
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Re: Strong acids

Postby IsaacLaw1E » Sat Dec 05, 2020 9:48 pm

The Sapling site has the following listed as important strong acids/bases.
image_2020-12-05_214805.png

claire ikemiya_2I
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Re: Strong acids

Postby claire ikemiya_2I » Sat Dec 05, 2020 11:17 pm

And if you are ever asked which acid is stronger than another, remember the elements with a smaller atomic radii is stronger since it has a shorter bond with H, which is requires more energy to break.

Kelly Singh
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Re: Strong acids

Postby Kelly Singh » Sat Dec 05, 2020 11:46 pm

claire ikemiya_2I wrote:And if you are ever asked which acid is stronger than another, remember the elements with a smaller atomic radii is stronger since it has a shorter bond with H, which is requires more energy to break.


This is so helpful, thank you!

Eliot Kagan 2G
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Re: Strong acids

Postby Eliot Kagan 2G » Sun Dec 06, 2020 2:46 pm

I actually think the atom with the larger radius is the "stronger" acid because the bonds are more easily broken (longer bonds = weaker bonds). This is why HF is considered a weaker acid than HI.
If we look at the group 17 acids, HF<HCl<HBr<HI in terms of acidity. Remember that the weak/strong measurements determine how easily the chemical makes H3O+, so the weaker the bond the stronger the acid.

Yeprem
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Re: Strong acids

Postby Yeprem » Sun Dec 06, 2020 4:54 pm

That is correct. The longer the bond is the easier it can be broken and make up an acid. However, if the atom is not straight up connected to H but it is connected to H through another atom such as O, then it is based on electronegativity, where the more electronegative the atom is, the stronger it pulls electrons, thus making a stronger acid.

Mingzi Yang 1E
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Joined: Wed Sep 30, 2020 9:53 pm

Re: Strong acids

Postby Mingzi Yang 1E » Fri Dec 11, 2020 11:06 pm

Thank you for all your responses. They are helpful for me to distinguish some strong acids.

Tanya Nguyen 1B
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Re: Strong acids

Postby Tanya Nguyen 1B » Sat Dec 12, 2020 10:51 pm

Memorizing them is a good way to go but if it is too difficult to remember all 7 acids, a good way is to remember the phrase "Sorry I Brought No Clean Clothese" where each of the underlined correlates to one of the strong acids.


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