Friday, October 15, 2010

How to name acids (by Bev)

-ACID: a covalent (non-metal + non-metal) bond formed from a negatively charged ion & a hydrogen ion dissolved in water
     -when dissolved in water, ions separate
     -chemical formula for an acid starts with a H (hydrogen)

-SIMPLE ACIDS
1) prefix: "hydro"
2) the last syllabe of the non-metal is replaced with the suffix "ic"
3) add the word "acid" at the end

ex. HF = hydrofluoric acid
HCl = hydrochloric acid
HBr = hydrobromic acid

-COMPLEX ACIDS
1) "-ate" of the polyatomic anion is replaced with the suffix "-ic"
2) "-ite" of the polyatomic anion is replaced with the suffix "-ous"


3) add the word "acid" at the end

*REMEMBER (this actually works!): "We ate ic-y sushi & got appendic -ite-ous."


ex. HCH3COO = acetic acid
HClO3 = chloric acid
HNO2 = nitrous acid
HClO4 = perchoric acid

beware the exception!
HCN = hydrocyanic acid (it is a simple acid!)

links:
http://www.saskschools.ca/curr_content/chem30/modules/module2/lesson4/Namingacids.htm

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