how do i finish these equations

sailorchik · Post by **sailorchik** » Tue Aug 07, 2007 8:23 am

Na + HNO₃ --->

Ni(II) + Cu₂O -->

Zn + Mg(NO₃)₂ -->

holyland · Post by **holyland** » Fri Aug 10, 2007 7:30 pm

1. Na + HNO₃ --->
do you see HNO₃ not in water ? in my opinion, Na+H₂O=1/2H₂+NaOH
then NaOH + HNO₃=NaNO₃+H₂O

2.Ni(II) + Cu₂O --> would they react ? sorry i don't know !

3.Zn + Mg(NO₃)₂ --> Mg is more active than the element of Zn, so Mg(NO₃)₂ is more steadier than Zn(NO₃)₂..
i don't think the chemical reaction can happen in the normal environment.