HNO3 out of Ammonium Nitrate

[olmpiad]

How could I get HNO3 from Ammonium Nitrate (if it is possible).

[akcapr]

H2SO4 + 2NH4NO3--> 2HNO3+ (NH4)2SO4 .... i think

[budullewraagh]

a better way:

in dilute sulfuric acid:

H2SO4+NH4NO3-->NH4HSO4+HNO3

 

in concentrated sulfuric acid:

H2SO4+NH4NO3-->NH4HSO4+N2O5

in the latter, the gas evolved is very, very dangerous

[akcapr]

its interesting how concentration of the acid effects the outcome, i rememebr on this forum someone explaining this, but how does the conc. of the acid effect wether the product is bisulfate or sulfate?

[H2SO4]

Well there would be more "sulfatei ion" around to make a bisulfate, why when theres not enough there is only the "sulfate". Youd think it would be mixed though.

[budullewraagh]

the second hydronium cation of sulfuric acid doesn't dissociate completely, or nearly so. thus, a 2:1 ratio would increase yields