HNO3 is a strong electrolyte. An electrolyte is any material that separates into negatively charged ions, or anions, and positively charged ions, or cations, in water. A strong electrolyte ionizes 100 percent. Strong acids such as HNO3 are strong electrolytes.
Nitric acid or HNO3, which is odorless and highly corrosive, is widely used as a fertilizer and a strong oxidizing medium. Though nitric acid reacts with various metals such as silver and copper, it does not react with pure gold, only with alloyed gold. For this reason, HNO3 is used by many jewellers as a cheap way to gauge gold's purity and alloy content.