Identifying Salt pH

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Danielle Goldwirth 3F
Posts: 62
Joined: Wed Sep 30, 2020 10:07 pm

Identifying Salt pH

Postby Danielle Goldwirth 3F » Sat Dec 12, 2020 8:51 pm

I watched a youtube video to clarify my understanding on identifying acidic/basic/neutral salts.
It seems like there are a few ways to approach this kind of question.
Generally:

Strong Acid + Strong Base -> neutral salt

Strong Acid + Weak Base -> acidic salt

Strong Base + Weak Acid -> basic salt

I know we've discussed the cations and anions and formation with H2O, etc, in relation to this, but is it not as simple as following the above when determining the answer to these questions?

Sunny Wu 3A
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Re: Identifying Salt pH

Postby Sunny Wu 3A » Sat Dec 12, 2020 8:59 pm

I may be wrong, but I'm pretty sure it's this simple, unless there are cases like weak base + weak acid that may arise?

Danielle Goldwirth 3F
Posts: 62
Joined: Wed Sep 30, 2020 10:07 pm

Re: Identifying Salt pH

Postby Danielle Goldwirth 3F » Sat Dec 12, 2020 9:05 pm

I thought I remembered seeing somewhere that contradicted it but maybe not.
Good to know thank you!

Nancy Yao
Posts: 99
Joined: Wed Sep 30, 2020 9:38 pm

Re: Identifying Salt pH

Postby Nancy Yao » Sat Dec 12, 2020 11:26 pm

I think it is like this too.

705383815
Posts: 101
Joined: Wed Sep 30, 2020 10:10 pm

Re: Identifying Salt pH

Postby 705383815 » Sat Dec 12, 2020 11:34 pm

What matters in the end, my friend, is the relative concentrations of H+ and OH-, so if you get molecules that are slightly stronger at providing H+ molecules over OH- molecules, then the solution should overall be acidic.

Isaias Gomez D3A
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Re: Identifying Salt pH

Postby Isaias Gomez D3A » Sat Dec 12, 2020 11:47 pm

correct, from my understanding :) and very useful, thank you!

Nick Saeedi 1I
Posts: 112
Joined: Wed Sep 30, 2020 9:39 pm

Re: Identifying Salt pH

Postby Nick Saeedi 1I » Thu Dec 17, 2020 12:33 am

I think this is the correct way it works.


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