Salt acidic or basic?

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Emily Chiem_1B
Posts: 21
Joined: Fri Sep 25, 2015 3:00 am

Salt acidic or basic?

Postby Emily Chiem_1B » Tue Dec 01, 2015 8:18 pm

How can you determine if a salt is acidic or basic?

Leslie Romo 1C
Posts: 21
Joined: Fri Sep 25, 2015 3:00 am

Re: Salt acidic or basic?

Postby Leslie Romo 1C » Tue Dec 01, 2015 9:20 pm

salt consists of a cation and anion ionically bonded with each other.
If the cation forms a strong base and the anion a weak acid, then it's basic.
If the cation forms a weak base and the anion a strong acid, then it's acidic.

PaulPatel
Posts: 21
Joined: Fri Sep 25, 2015 3:00 am

Re: Salt acidic or basic?

Postby PaulPatel » Sun Dec 06, 2015 12:30 pm

Yes the person above has the correct idea!

I can offer an example to further clarify the details as well.

So say that you react CH3COOH with NaOH to form Na+CH3OO- and water.

The salt in this case would be Na+CH3OO- where CH3COO- would be the conjugate base of the acid. Now look when the salt dissociates:

Na+ + CH3COO- + H2O ----> Na+ + CH3COOH- + OH-

as you can see, the salt of Na having the conjugate base makes a basic solution at the end! This would be opposite if the salt had onto it a conjugate acid (for example, NH4Cl)

I hoped this helped!

Julie Barreto 3A
Posts: 21
Joined: Wed Sep 21, 2016 2:56 pm

Re: Salt acidic or basic?

Postby Julie Barreto 3A » Tue Nov 29, 2016 9:00 pm

what is your only given the salt and it asks if its an acid or base without the equation : for instance, NH4Br


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