I need to write the balanced reaction between aqua regia (HNO3 + 3HCl) with gold (Au), with the gold oxidizing to 3+ ions.
Based on what I've read online the reaction should go like:
3HNO3 + 4HCl + Au → 3NO2 + 3H2O + HAuCl4
Is this reaction balanced correctly? If not, how should it be balanced?