Posted by **hannah** on Saturday, November 27, 2010 at 8:24pm.

balance the formula

Cu(OH)2(s) + HNO3(aq) -> H2O(l) + fine the formula here(aq)

i did the H20 but i don't know the other formula i thought it was CuNO3 but that's wrong and idk what to do with the extra O

- chem -
**DrBob222**, Saturday, November 27, 2010 at 9:45pm
This is an acid-base reaction. It forms water + salt and the oxidation state (valence) of the Cu in Cu(OH)2 is +2; therefore, the formula for the nitrate of Cu is Cu(NO3)2. You tried to make an oxidation-reduction equation out of it and that won't work.

Cu(OH)2(s) + 2HNO3(aq) ==> 2H2O(l) + Cu(NO3)2

- chem -
**hannah**, Sunday, November 28, 2010 at 11:33am
thanks

so for this equation:

HC2H3O2(aq) + Ca(OH)2(aq) -> H2O(l) + find the formula here

the last part would be CaOC2H3O2?

im a little confused. did the O fromt he H2O come from (OH)2?

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