How to tell acids and bases
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How to tell acids and bases
Does anyone know a quick way to tell if a chemical is an acid or base without being given the formula?
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Re: How to tell acids and bases
I'm pretty sure they'll always give you the formula? or like acids are called acids: eg acetic acid, hydrochloric acid; bases are hydroxides eg: barium hydroxide
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Re: How to tell acids and bases
Generally, if there is an H it's an acid and if there is an OH then it's a base. I'm not quite sure if that's what you were trying to ask?
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Re: How to tell acids and bases
Typically, you just look at how it would react with water. Lot's of times if it has a negative charge, it's a base and a positive charge will be an acid.
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Re: How to tell acids and bases
In chem14a, we drew lewis dot structures, and through that, we saw if something was an acid or a base.
Re: How to tell acids and bases
It also depends on which definition of acids and bases you are using. In this class I believe we mainly just use the Brønsted-Lowry definition of acids and bases, which follows:
A Brønsted-Lowry acid is anything that is a proton donor (when I say proton donor in this context it means an H+ ion, not to be confused with an actual proton).
A Brønsted-Lowry base is anything that accepts a proton (again, proton is used in the same sense).
There are also Arrhenius acids and bases, which are more specific than the Brønsted Lowry definition, and Lewis acids and bases, which encompasses a broader range of substances than both the Brønsted-Lowry and Arrhenius definitions.
A Brønsted-Lowry acid is anything that is a proton donor (when I say proton donor in this context it means an H+ ion, not to be confused with an actual proton).
A Brønsted-Lowry base is anything that accepts a proton (again, proton is used in the same sense).
There are also Arrhenius acids and bases, which are more specific than the Brønsted Lowry definition, and Lewis acids and bases, which encompasses a broader range of substances than both the Brønsted-Lowry and Arrhenius definitions.
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Re: How to tell acids and bases
Usually acids have an extra H on either the end or beginning of the chemical formula, and bases have an OH group.
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Re: How to tell acids and bases
Acids tend to have an H and bases OH
Also, the Bronsted-Lowry definition:
acid: proton (H+ ion) donor
base: proton acceptor
Also, the Bronsted-Lowry definition:
acid: proton (H+ ion) donor
base: proton acceptor
Re: How to tell acids and bases
Usually, the list of acids and bases remain a constant and we always know what they give us.
But if not, we have to figure out from the lewis structures after we draw them, or from the very formula, if it is given.
But if not, we have to figure out from the lewis structures after we draw them, or from the very formula, if it is given.
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