What do the suffixes -ate, -ous, and -ic mean in compound names?

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What does this -ate suffix with compounds mean? Can anybody tell about other suffixes like -ous -ic etc as well.

Thanks...
 
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Xishan said:
What does this -ate suffix with compounds mean? Can anybody tell about other suffixes like -ous -ic etc as well.

Thanks...

well, it depends, but in organic & biochemistry it means that you have a stable ion of a carboxylic acid at a particular pH.

for example, pyruvic acid:

[tex]CH_3COCOOH[/tex]

is the carboxylic acid. but at pH > 3, most of it will be found in the deprotonated form:

[tex]CH_3COCOO^-[/tex]

this is called "pyruvate". the same convention holds for other carboxylic acids.

if you are talking about general or inorganic chemistry, then "-ate" is used to designate oxidation states of polyatomic ions, as Dr. Mark's link indicates.