Zinc reacts with concentrated nitric acid giving three products only: zinc nitrate, an oxide of nitrogen and water.
3.0 moles of zinc react with 8.0 moles of nitric acid. Zinc nitrate contains Zn$^{2+}$ ions.
What could be the formula of the oxide of nitrogen?
1 )
N$_2$O
NO
3 )
N$_2$O$_3$
4 )
NO$_2$
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