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Re: sodium bicarbonate formula

Elie said

> in my knowledge NaHCO3 is sodium bicarbonate (baking
> soda) and Na2CO3 is
> sodium carbonate (washing soda - more caustic, used to
> soften water by
> precipitating CaCO3). since the carbonate anion has a
> negative charge of two
> something like NaH2CO3 is incorrect.

I would think that one of them must be incorrect but either
gets cited on a number of different and purportedly
knowledgeable sites.  I know Carbon is somewhat flexible,
but CO3 is less ambivalent, as are Na and H.  

Scott H.

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