Posted by christina on .
For an example of charge balance in my text it says
Write a charge balance eqzn for an aqueous sol that contains NaCl,
Ba(ClO4)2, & Al2(SO4)3
The answer given is:
[Na+] + [H30+] + 2[Ba+] + 3[Al3+]= [ClO4-] + [NO3-] + 2[SO42-] + [HSO4-] + [OH-]
I know that the rxns are:
NaCl=> Na+ + Cl-
Ba(ClO4)2 => 2Ba2+ + 2ClO4-
Al2(SO4)3 => 2Al3+ + 3SO42-
SO42- + H2O => H2SO4- + OH-
The thing is I don't know how they get [NO3] from these being combined together
Maybe I forgot an rxn? b/c the rxn's aren't shown, just the answer...
2H2O => H3O+ + OH-
The answer book goofed. NO3^- doesn't belong and Cl^- has been omitted. I suspect the original salt was NaNO3 and not NaCl. I think the answer then would be ok.
Thanks Dr.Bob, I was wondering where they got the NO3 from