Homework Help: CHEM

Posted by OLGA on Sunday, September 26, 2010 at 1:29pm.

what is the charge of a PHOSPITE ?
and how do i write it?

CHEM - DrBob222, Sunday, September 26, 2010 at 1:45pm
phosphate = PO₄^-3

phosphite = PO_3</^-3

Here is a good site for all of the polyatomic ions, including phosphite ion.
http://www.nauticom.net/users/jihall/bill/ions.htm
CHEM - DrBob222, Sunday, September 26, 2010 at 1:46pm
phosphite should be PO₃^-3
CHEM - OLGA, Sunday, September 26, 2010 at 1:53pm
okay then, what is calcium phospite?
CHEM - DrBob222, Sunday, September 26, 2010 at 2:11pm
Ca3(PO3)3 in my book. However, to be fair about it, I looked on the web AND in The Merck Index and found CaHPO3 and it was labeled calcium phosphite. Technically, however, that should be called calcium hydrogen phosphite

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