Which is(are) true about N2O5?
It is an anhydride of nitric acid.
In solid state, it exists as NO+2NO−3
It can be prepared by heating HNO3 over P2O5
N2O5 - Nitrogen (V) oxide can be prepared by heating HNO3 over the dimer of P2O5:
4HNO3+P4O10⟶2N2O5+4HPO3
N2O5+2H2O⟶2HNO3
In the solid state, N2O5 exists as nitronium nitrate - NO+2NO−3
The structure of nitrogen pentoxide is very different from phosphorus pentoxide: