\(\mathrm{HNO}_5\): This is not a common or recognized chemical compound. It might be a typographical error or a hypothetical compound.
\(\mathrm{H} + \mathrm{NO}_3\): This represents the dissociation of nitric acid (\(\mathrm{HNO}_3\)) into a hydrogen ion (\(\mathrm{H}^+\)) and a nitrate ion (\(\mathrm{NO}_3^-\)).
Step 3: Conclusion
Given the analysis, \(\mathrm{HNO}_5\) is likely incorrect or hypothetical, while \(\mathrm{H} + \mathrm{NO}_3\) correctly represents the dissociation of nitric acid.