Using a bisulfate as a substitute for sulfuric acid, then you should probably try using a different nitrate that doesn't form an acid sulfate
byproduct. Then the dynamic for reaction would favor the production of nitric acid and a normal sulfate byproduct. For example magnesium nitrate,
aluminum nitrate, zinc nitrate, copper nitrate, or calcium nitrate but there would be an insoluble byproduct as complication for calcium nitrate. You
could make a dilute nitric acid by filtering out a nearly insoluble byproduct sulfate, but it would be dilute acid, probably 20% or less HNO3 and the
acid would have some amount of dissolved impurity of the byproduct sulfate salt. |