rules for determining
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rules for determining
What rules do I need to keep in mind to tell whether a salt is acidic or basic?
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Re: rules for determining
Hi! What I do is first look at the different atoms in the salt/compound. In order to determine whether it is acidic, basic, or neutral, you have to determine if it contains a conjugate acid or base. For example, NaCN is a basic salt. The CN- anion came from HCN, which is an acid. In other words, CN- is the conjugate base/anion of HCN and that's how you know that it is a basic salt. I hope this helps!
Re: rules for determining
It depends on whether or not the conjugate acid or the conjugate base from the salt is the component of a strong acid or a strong base and whether the resulting conjugate substances are stronger than each other or not. For example, if a salt has a nitrate in it, then it is likely going to cause the solution to become basic since the nitrate ion will attract H+ from the water.
Re: rules for determining
Strong Acid + Strong Base -> neutral salt
Strong Acid + Weak Base -> acidic salt
Strong Base + Weak Acid -> basic salt
Strong Acid + Weak Base -> acidic salt
Strong Base + Weak Acid -> basic salt
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Re: rules for determining
A Strong Acid + a Strong Base = a neutral salt
A Strong Acid + a Weak Base = a acidic salt
A Strong Base + a Weak Acid = a basic salt
A Strong Acid + a Weak Base = a acidic salt
A Strong Base + a Weak Acid = a basic salt
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Re: rules for determining
So when I do this, I first separate the salt into its anion and its cation. From there, I try to see whether or not one of them belong to a strong acid or base and if so, they do not affect the pH of the solution. The one that does belong to the pH can affect it.
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Re: rules for determining
Are all acids/bases salts? What part of their composition makes them a salt?
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