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Chemical Equations...

Posted: Tue Feb 20, 2007 4:52 pm
by cajunmo2
OK. I have had a lot of problems with this thing. I dont seem to be able to write, much less balance, a chemical equation. If someone could give me a brief synopsis on how to write balanced equations, it would be greatly appreciate it. I have tried looking it up on the internet, but it is no use. If you can incorporate METATHESIS and REDOX reactions into your explanations that would be great. Thank you.

(e.g. Na + H2O ----> NaOH + H) (Metathesis or Redox reaction?)

Posted: Tue Feb 20, 2007 7:35 pm
by vhpk
Your reaction is a redox reaction:
Na + H2O --> NaOH + 1/2H2
Redox reaction means in this reaction there is a change about oxidation number.
Methatesis reaction means in this reaction, the reactants change their part to each other:
BaCl2 + H2SO4 --> BaSO4 + 2HCl
In this reaction, BaCl2 move its Cl and H2SO4 move its SO4 to each other, and there aren't any changes about oxidation number

Posted: Tue Feb 20, 2007 10:56 pm
by cajunmo2
Ok. Thanks for your help! I really appreciate it. But I have the actual definitions for them. I need to know how to balance an equation. I am really having trouble with this, I am thinking about dropping the class. I Just do not understand it! Lol.